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Jenner & Block

Jenner & Block LLP is an American founded in in 1914 as Newman, Poppenhusen & Stern by lawyers Jacob Newman, Conrad Poppenhusen, and Henry Stern, later renamed after the addition of partners Albert Jenner and William Block following the deaths of Newman and Stern in 1928. With more than 500 attorneys across offices in , , , , , and , the firm focuses on complex commercial litigation, appellate advocacy, corporate transactions, government investigations, and . The firm has built a reputation for securing victories in high-stakes disputes, from trial courts to the U.S. , and for its transactional work serving blue-chip corporate clients, including early representations of 's banks and industrial firms. Jenner & Block has received consistent accolades for excellence, designated as the top firm in the United States by in 12 of the past 15 years, reflecting its commitment to litigation and service. In 2025, the firm drew political controversy when a presidential accused it of partisan "" and penalized it for hiring former prosecutor , though a federal judge struck down the order as unconstitutional retaliation against protected speech and client representation.

History

Founding and Early Years

Jenner & Block traces its origins to 1914, when it was established in as Newman, Poppenhusen & Stern by Jacob Newman, Conrad Poppenhusen, and Henry Stern, three lawyers with experience at prominent local firms. The firm began as a small operation in downtown , serving the city's burgeoning financial and industrial sectors during a period of significant economic expansion driven by manufacturing, , and . From its inception, the firm focused on , representing banks, mortgage companies, and established corporations in transactional advisory and matters. This client base reflected Chicago's role as a Midwestern commercial hub, where demand for legal services in lending, property finance, and grew alongside and projects. The partners emphasized meticulous preparation and strategic counsel, laying the groundwork for a practice oriented toward protecting interests in complex dealings. In the firm's formative decade, it handled routine commercial litigation and counseling, building credibility through consistent service to blue-chip entities amid economic fluctuations, including post-World War I recovery. By the late , following the deaths of Newman and Stern in , the firm adapted by incorporating seasoned litigators like former Chief Justice Floyd Thompson, which sustained its emphasis on rigorous commercial representation without shifting to specialized niches. This period solidified its foundational approach to in a competitive legal market.

Mid-20th Century Growth

During the , Jenner & Block's predecessor firm represented utilities magnate in federal fraud and securities violation charges brought in 1934, helping to defend against allegations stemming from the collapse of his holding company empire. This high-profile defense underscored the firm's early involvement in complex corporate litigation amid economic turmoil, contributing to its stability through representation of banks, mortgage companies, and industrial clients. As the firm navigated World War II-era disruptions, including resource shortages and government regulations affecting corporate operations, it maintained continuity by focusing on established -based business practices, avoiding the contraction experienced by many peers. Internal growth accelerated post-Depression with key partner additions, such as Albert E. Jenner Jr., who joined a predecessor entity, Newman, Poppenhusen and Stern, in 1933 and became a partner by 1939 after affiliation with Poppenhusen, Johnston, Thompson and Cole. The firm, operating under names like Johnston, Thompson, Raymond & Mayer through the 1950s, consolidated its presence, evolving from a transactional focus to include litigation for defense contractors, including a longstanding relationship with established in that decade. These developments positioned it as a mid-tier firm by the , with Jenner Jr.'s leadership emphasizing appellate capabilities alongside corporate work. The firm's entry into landmark constitutional litigation emerged prominently in the 1960s, exemplified by its pro bono representation in Witherspoon v. Illinois (1968), where partners Albert E. Jenner Jr., Jerold Solovy, and Thomas P. Sullivan served as appointed counsel for death row inmate William Witherspoon shortly before his execution date. The U.S. ruled that Illinois's exclusion of jurors with general conscientious scruples against violated the Sixth and Fourteenth Amendments, establishing standards for "death-qualified" juries and marking Jenner & Block's growing appellate prominence. This case highlighted the firm's adaptation from economic recovery work to constitutional challenges, solidifying its reputation in high-stakes federal matters while sustaining corporate client diversity.

Late 20th and Early 21st Century Expansion

During the 1970s, Jenner & Block elevated its national profile through founding partner Albert E. Jenner Jr.'s role as chief minority counsel to the U.S. House Judiciary Committee during the Watergate impeachment inquiry, where he led investigations into President Richard Nixon's involvement and advocated for in the proceedings. This high-visibility engagement solidified the firm's reputation for handling complex constitutional and appellate work, attracting government-related clients and paving the way for practice diversification beyond traditional Chicago-based litigation. The firm pursued steady growth through the 1980s and 1990s by bolstering its corporate and finance practices amid economic expansions, including mergers and securities counseling, while maintaining a core emphasis on trial and appellate advocacy. In 2002, Jenner & Block established its Washington, D.C. office to deepen engagement in federal regulatory and policy matters, enabling closer collaboration with government entities and expanding its footprint beyond the Midwest. Into the early 21st century, the firm navigated major financial upheavals, serving as court-appointed examiner in the 2008 Holdings Inc. Chapter 11 bankruptcy—the largest in U.S. history—with Chairman Anton R. Valukas directing a team that produced a 2,200-page report detailing operational failures, lapses, and practices like transactions. In 2010, partners including Joseph Gromacki advised on its $23.1 billion post-bankruptcy IPO, facilitating the automaker's restructuring and public relisting after federal bailout involvement. These representations, coupled with strategic lateral hires in emerging areas like litigation, propelled headcount growth to approximately 450 lawyers by decade's end, supporting broadened capabilities in international transactions and crisis advisory.

Recent Developments and Financial Growth

In 2024, Jenner & Block achieved significant financial growth, with gross revenue reaching $682.16 million, reflecting a 17% increase from the prior year, primarily attributed to expanded litigation and transactional practices amid a robust demand for legal services. Profits per equity partner rose 23.5% to $2.84 million, underscoring efficient operational scaling and client retention in high-stakes matters. This performance positioned the firm at #86 in gross revenue among Am Law 100 firms, with revenue per lawyer at $1.26 million earlier in the year, further climbing to $1.487 million by year-end metrics. The firm expanded its workforce to over 500 lawyers across seven offices in the United States and , supporting global operations while maintaining a focus on core competencies in a post-pandemic legal characterized by work arrangements and increased emphasis on work-life integration. Associate satisfaction rankings improved markedly, with Jenner & Block ascending to #20 nationally in The American Lawyer's 2025 Midlevel Associates Survey, reflecting enhancements in , , and flexible staffing models. Summer associate satisfaction also ranked in the top 25 at #24, highlighting sustained talent attraction amid competitive Big Law environments. Strategic partnerships bolstered operational depth, including the ongoing Jenner & Block Supreme Court and Appellate Clinic at the , which facilitates advanced training and appellate expertise integration for firm lawyers and students alike. The firm's ascent to #4 on The American Lawyer's 2025 — a 10-spot jump—further evidences balanced growth across revenue, contributions, diversity, and associate satisfaction, adapting to evolving client needs in technology-driven and remote-hybrid workflows.

Practice Areas

Litigation and Appellate Work

Jenner & Block's litigation practice centers on high-stakes trial work in complex commercial disputes, antitrust enforcement challenges, and white-collar criminal defense, supported by nearly 400 litigators across its offices. The firm emphasizes trial readiness, with nine Fellows of the American College of Trial Lawyers—representing the highest percentage among AmLaw 100 firms—and a track record of handling matters in federal and state courts, as well as international arbitration. In antitrust, the practice addresses consequential disputes involving mergers, pricing, and distribution, often integrating regulatory expertise to resolve investigations efficiently. White-collar defense focuses on representing institutions and executives in government investigations, prioritizing professional handling of sensitive allegations under statutes like the Anti-Kickback Statute, as demonstrated by a 2025 Seventh Circuit victory reversing convictions. The firm's appellate and Supreme Court practice complements its trial capabilities, providing early strategic input to shape litigation outcomes and pursuing appeals in federal and state courts on issues spanning , antitrust, civil rights, and regulatory challenges. With over a century of appellate experience, Jenner & Block lawyers collaborate closely with trial teams to identify appealable issues proactively, focusing on high-profile corporate disputes, government-facing litigation, and matters. In the U.S. , six different partners argued cases across the last four terms (as of 2023), covering topics such as voting rights, tribal sovereignty, death penalty procedures, Social Security, and tax provisions. Notable appellate successes include a unanimous 2024 Supreme Court victory in FBI v. Fikre, establishing limits on government no-fly list placements without for U.S. citizens, and a defense of the in Haaland v. Brackeen (2023), upholding congressional authority over Native American child custody preferences. The firm also secured a rare double reversal in the Fourth Circuit in 2025 for , overturning class certification in claims, and a Second Circuit affirmance of tribal gaming for the Cayuga Nation, followed by Supreme Court denial of to the opposing party. These outcomes reflect a results-oriented approach grounded in rigorous legal analysis, contributing to precedents on procedural fairness and regulatory scope without reliance on unsubstantiated advocacy.

Corporate Transactions and Finance

Jenner & Block's corporate transactions and finance practice advises clients on mergers and acquisitions, securities transactions, private equity deals, and complex financing arrangements, serving Fortune 500 companies and emerging businesses alike. The team handles cross-border M&A, strategic asset purchases, and regulatory-compliant financings in regulated industries such as aerospace, defense, and payments. In fiscal year 2023, the firm participated in notable M&A matters, including representation of Albertsons Companies, Inc. in its proposed $24.6 billion merger with Kroger Co. and a related $1.9 billion divestiture to C&S Wholesale Grocers to address antitrust concerns. In bankruptcy and restructuring, Jenner & Block has managed high-stakes financial unwinds, emphasizing creditor negotiations and asset maximization. The firm served as lead counsel to Corporation during its June 2009 Chapter 11 filing, guiding the $91 billion reorganization that preserved 1.2 million jobs and facilitated a $23.1 billion U.S. government investment for operational continuity. Partner , formerly GM's general counsel, directed the restructuring efforts, achieving court approval of a consensual plan amid disputes with secured creditors holding over $6 billion in claims. Similarly, in the 2008 Lehman Brothers Holdings Inc. bankruptcy—the largest in U.S. history at $639 billion in assets—the firm, led by Chairman Anton Valukas as court-appointed examiner, produced a 2,200-page report detailing accounting practices and failures, informing $53.5 million in professional fees for stakeholder recovery analyses. The practice also supports sponsors in distressed investments and out-of-court workouts, with recent additions bolstering expertise in Chapter 11 proceedings for clients like JCPenney and . In securities and finance, Jenner & Block counsels on debt issuances, equity offerings, and joint ventures, prioritizing tailored structures to mitigate liquidity risks in volatile markets. These efforts have yielded outcomes such as expedited plan confirmations in multi-jurisdictional cases, though recovery rates vary by asset class and creditor priority, often aligning with or exceeding benchmarks in automotive and financial services restructurings.

Government Affairs and Crisis Management

Jenner & Block's Government Affairs and Crisis Management practice provides regulatory counseling and strategic responses to governmental investigations, leveraging a bipartisan team of former officials from the , congressional committees, and executive agencies across Republican and Democratic administrations. This approach enables clients to receive pragmatic guidance tailored to prevailing political dynamics without partisan alignment. The team offers advisory services on policy litigation, extraditions, and enforcement actions, coordinating multidisciplinary efforts that include internal s, compliance enhancements, and risk mitigation for businesses facing congressional, DOJ, or state-level scrutiny. In handling crises such as congressional probes or agency enforcement, attorneys conduct witness preparations, mock hearings, and integrated legal-media strategies to manage information requests, subpoenas, and parallel proceedings, often de-escalating pressures through proactive positioning and negotiated resolutions. Examples include counseling a multinational firm during a year-long congressional antitrust and preparing for the $26 billion T-Mobile-Sprint merger , as well as facilitating a $20 billion-plus settlement. Serving industries from and to , , healthcare, and , the practice emphasizes holistic solutions that address multijurisdictional challenges, such as those involving contractors or consumer-facing companies under . Capabilities were expanded in May 2025 with the hiring of Matthew Klapper, former chief of staff to the Senate Judiciary Committee and DOJ official, to strengthen handling of complex crises integrating legal, regulatory, and reputational elements. The practice has been recognized as a finalist by The National Law Journal for and Oversight, and ranked by Chambers USA for Government Relations: Congressional Investigations.

Pro Bono and Public Interest Practice

Jenner & Block maintains a substantial practice, with lawyers contributing over 75,000 hours annually as of 2024, surpassing the firm's internal targets and industry minima such as the 50-hour threshold recommended by the . In 2023, the average per-lawyer contribution reached 167 hours, reflecting a 14% increase from prior years, while 97% of attorneys exceeded 50 hours in 2024, totaling more than 90,000 hours across offices. This volume has cumulatively delivered over $305 million in free legal services by the end of 2024, including support for access-to-justice initiatives aiding low-income individuals, small businesses, and nonprofits. The firm's pro bono efforts include high-profile Supreme Court representations, such as co-counseling with Lambda Legal in Lawrence v. Texas (2003), where Jenner & Block partners filed merits briefs and argued on behalf of petitioners challenging Texas's criminal sodomy statute, contributing to the 6-3 decision invalidating it under the Fourteenth Amendment. Similarly, in Brown v. Entertainment Merchants Association (2011), Jenner & Block represented industry respondents in a 7-2 ruling striking down California's ban on sales of violent video games to minors as violative of First Amendment protections for expressive content. These cases exemplify engagements in constitutional and free speech matters, alongside ongoing Supreme Court and appellate clinic work with the University of Chicago Law School, where students assist in amicus briefs and petitions on diverse issues. Pro bono activities extend to corporate-aligned efforts, such as advising small businesses and nonprofits on , contracts, and to enhance operational and access to . Recent amicus filings include pro bono briefs supporting emergency abortion care under federal and challenging restrictions on , reflecting involvement in litigation. However, analyses of biglaw firms' pro bono amicus indicate a selective ideological tilt toward liberal-leaning causes at the , with Jenner & Block's contributions aligning in this pattern despite the breadth of hours logged. This focus, while yielding measurable outcomes like appellate victories in cases (e.g., overturning a based on improper rap lyrics in 2025), has drawn scrutiny for prioritizing certain over balanced , though total impact metrics—such as hours served and monetary value—remain among the highest in the profession.

Notable Matters

Supreme Court and Appellate Cases

In Witherspoon v. Illinois, 391 U.S. 510 (1968), Jenner & Block partners Albert Jenner Jr., Jeremiah Marsh, and others served as appointed counsel for petitioner William Witherspoon, convicted of murder and sentenced to death in state court; the ruled 6-3 that the death sentence was unconstitutional, as the prosecution's exclusion of jurors expressing general conscientious scruples against produced a jury "uncommonly willing to condemn a man to die," violating the Sixth and Fourteenth Amendments. The decision established limits on death-qualification of capital juries, requiring that opposition to the death penalty alone does not justify automatic exclusion absent inability to vote for it in the case at hand. Jenner & Block represented petitioners John Geddes Lawrence and Tyron Garner in Lawrence v. Texas, 539 U.S. 558 (2003), filing merits briefs challenging convictions under a Texas statute criminalizing consensual sexual conduct between adults of the same sex; the Court held 6-3 that such laws violated substantive due process under the Fourteenth Amendment, overruling Bowers v. Hardwick (1986) and extending privacy protections to intimate same-sex relations. This outcome invalidated similar statutes in 13 other states, reshaping constitutional jurisprudence on personal autonomy and equal protection. The firm achieved a unanimous 9-0 victory in FBI v. Fikre, 602 U.S. ___ (2024), representing respondent Yaser Fikre, a U.S. citizen of Sudanese descent challenging his placement on First Amendment retaliation grounds; the Court held that his removal from the list and government promises of non-readdition did not moot the suit, as credible threats of future relisting persisted. In October 2025, Jenner & Block secured another win upholding tribal in a gaming compact dispute, dismissing challenges by RunItOneTime LLC against protections under the . Empirical assessments of advocacy place Jenner & Block among leading firms, with attorneys securing favorable justices' votes at rates exceeding peers in analyzed ; for instance, partner Adam Unikowsky's arguments contributed to the firm topping performance metrics in overall vote percentages during the . The has handled dozens of merits arguments and briefs, yielding outcomes including multiple unanimous decisions and reversals in high-stakes appeals, though specific win rates vary by and case type without aggregate data publicly tabulated beyond individual rulings.

Corporate and Bankruptcy Representations

Jenner & Block has represented clients in high-stakes corporate and restructurings, emphasizing investigative and transactional work that supported asset maximization and efficient resolutions during financial crises. In these matters, the firm contributed to processes yielding substantial recoveries and distributions, often through expedited timelines relative to norms for complex cases. In the Lehman Brothers Holdings Inc. Chapter 11 filing on September 15, 2008—the largest in U.S. history with $639 billion in assets and $613 billion in debt—chairman Anton R. Valukas served as court-appointed examiner. His team's March 2010 report, spanning over 2,200 pages, scrutinized the firm's collapse, highlighting Repo 105 transactions that temporarily offloaded $50 billion in assets to obscure leverage ratios exceeding 30:1. This analysis underpinned avoidance actions, clawbacks, and litigation against former executives and counterparties, facilitating asset liquidations and distributions; holding company creditors ultimately recovered more than the initial 21% estimate, with over $75 billion in net assets distributed by 2019 amid ongoing wind-downs. The firm earned $53.5 million in fees for the examination. For filed June 1, 2009, amid $172.8 billion in assets and $91.1 billion in liabilities, Jenner & Block counseled on the Section 363 "good assets" sale to a new entity backed by $30 billion in , enabling exit from on July 10, 2009—after only 40 days, contrasting with multi-year timelines in comparable automotive or industrial restructurings like Chrysler's. The firm then handled GM's November 18, 2010, IPO, pricing 478 million shares at $33 each to raise $20.1 billion (the largest U.S. equity IPO then), which supported repayment of $6.7 billion in U.S. Treasury loans while navigating the government's 61% initial stake. Partner Joseph P. Gromacki led the effort, securing $18 billion in post-bankruptcy equity value preservation for stakeholders through rapid deleveraging.

Policy and High-Profile Litigations

Jenner & Block has undertaken significant representations of detainees, advocating for their rights and challenging practices on constitutional grounds. In the case of Majid , a detainee accused of facilitating operations, the firm represented him in military commission proceedings, resulting in the Convening Authority reducing his initial 26-year sentence to 10 years on March 11, 2022, accounting for and leading to eligibility for transfer. These efforts emphasized protections under the U.S. , arguing against prolonged detention without adequate trial safeguards, while government positions prioritized by classifying detainees as enemy combatants exempt from standard civilian habeas review to prevent release of potential threats. Partner , a specialist in military commissions, has contributed to plea negotiations in the 9/11-related cases, highlighting procedural complexities in balancing detainee rights with imperatives; media coverage noted Moss's commentary on stalled agreements amid evidentiary disputes over torture-tainted confessions. Outcomes in such litigations have included sentence modifications and calls for resettlement—such as the firm's February 2024 advocacy for transferring approved detainees after one client's anniversary of release—but persistent critiques maintain that judicial interventions risk undermining intelligence operations and detainee risk assessments, with 30 men still held as of early 2024 despite clearances for 16. In tobacco policy disputes, Jenner & Block defended major manufacturers like Philip Morris in appellate challenges to state-level enforcement actions, notably In re Tobacco II Cases (2006), where the firm successfully contended that California's Proposition 64 restricted private citizens' standing under the Unfair Competition Law to those suffering direct economic injury, curtailing class actions alleging deceptive marketing. This positioned industry defenses against expansive regulations post-Master Settlement Agreement, arguing overreach in applications beyond actual losses, while proponents of stricter controls cited tobacco's documented addictiveness and health impacts to justify broad litigation deterring corporate misconduct. Related representations, such as in Barbara Schwab et al. v. Philip Morris, involved post-trial appeals referencing findings on industry fraud, with outcomes favoring narrowed liability scopes over trial verdicts on deception. The firm has also engaged in policy litigations safeguarding representational rights amid regulatory pressures, invoking precedents like NRA v. Vullo (2024), where the struck down state officials' coercive tactics against advocacy groups; Jenner & Block cited this in challenging a 2025 targeting firms for work deemed contrary to national interests, arguing First Amendment violations in restricting counsel access. Such cases underscore tensions between policy-driven restrictions on controversial clients—balancing public safety claims—and defenders' assertions of independent bar obligations, with federal courts issuing injunctions against enforcement to preserve attorney autonomy.

Organization and Operations

Offices and International Presence

Jenner & Block's headquarters is located in , , at 353 N. Clark Street, serving as the firm's founding and largest office since 1914, with a focus on full-service litigation, investigations, and corporate transactions. The firm maintains additional U.S. offices in Washington, D.C., , (including at 2029 Century Park East and a downtown location), and , enabling proximity to key federal policy centers, financial hubs, and entertainment industries. Internationally, Jenner & Block extends its footprint through Jenner & Block London LLP, an affiliate entity based at 10 Exchange Square in London's district, which specializes in high-stakes contentious matters, , and for global clients, particularly in EU-related disputes, without constituting a full merger of operations. This affiliate supports the firm's cross-border capabilities, leveraging the city's role as a hub, while the overall network of over 500 lawyers emphasizes strategic geographic alignment for client service.

Firm Size, Structure, and Economics

Jenner & Block operates as a with more than 500 lawyers across its offices in the United States and . As of 2024, the firm employed 511 attorneys, positioning it among mid-sized elite law firms by headcount. The model emphasizes merit-based elevation, as demonstrated by the firm's annual promotions of associates to partner based on performance and contributions, with nine lawyers advanced to the in December 2024. In 2024, Jenner & Block achieved gross revenue of $682.16 million, reflecting a 17% year-over-year increase driven by core practice strengths in litigation and advisory services. Profits per surged 23.5% to $2.84 million, underscoring robust profitability amid broader industry fluctuations. These metrics ranked the firm 83rd in gross revenue on The American Lawyer's 2025 Am 200. The firm's structure balances associates and partners to optimize efficiency, with historical adjustments including de-equitization of underperforming partners to maintain a roughly 1:1 associate-to-partner as of the mid-2000s, though recent on precise ratios remains limited. Economic resilience is evident in sustained growth despite economic headwinds, supported by diversification into fixed-fee and success-based arrangements alongside traditional , reducing reliance on volume billing.

Recognition

Industry Rankings and Awards

Jenner & Block earned a Band 3 ranking in Appellate Law nationwide in the Chambers USA 2025 guide, highlighting its capabilities in complex appeals, including United States Supreme Court advocacy. The firm also received recognition in Bankruptcy/Restructuring in Chambers USA 2025, with placements in national and select regional categories, building on prior years' evaluations of its restructuring expertise. In the Chambers Global 2025 guide, the firm was ranked Band 3 in : Trademark, Copyright & Trade Secrets, affirming its international standing in contentious IP disputes. Vault's 2025 rankings positioned Jenner & Block 18th among top firms for Appellate Litigation, based on peer assessments of prestige and practice strength. The firm's practice garnered Law360's Bankruptcy Group of the Year award in 2023 for its role in high-profile restructurings, such as , contributing to sustained recognition in the field. These accolades reflect consistent third-party validations of Jenner & Block's litigation and transactional proficiencies, particularly in appellate, , and IP domains, without reliance on self-reported metrics.

Associate and Client Satisfaction Metrics

In the 2025 Midlevel Associates Survey conducted by , Jenner & Block ranked 20th nationally among participating firms for overall associate satisfaction, marking a 14-position improvement from its 34th place in 2024 and reflecting feedback from third-, fourth-, and fifth-year associates on 12 factors, including training, mentorship, and substantive work assignment. The firm also placed 24th in the same publication's 2025 Summer Associate Satisfaction Survey, which evaluates summer program experiences based on associate responses regarding workload, culture, and opportunities. Vault's 2025 rankings positioned Jenner & Block at 27th for associate satisfaction, highlighting its collegial atmosphere and mentorship but noting it trails elite peers like Cravath and Wachtell in aggregated scores. Client feedback in Chambers USA 2025 emphasizes Jenner & Block's strengths in responsiveness and practical results, with sources praising the firm's "balanced guidance" that accounts for both legal rigor and realities in litigation and advisory matters. However, associate reviews on platforms like and indicate variances in work-life balance compared to industry benchmarks, with frequent mentions of intense hours and fast-paced demands typical of high-stakes litigation practices, though supported by wellness initiatives such as and access to fitness and mental health resources. These critiques align with broader Big Law trends, where Jenner & Block's retention metrics benefit from strong training but face pressure from billable hour expectations exceeding 1,800 annually on average, per self-reported data.

Personnel

Notable Current Partners

Ian Heath Gershengorn serves as chair of Jenner & Block's Appellate and Supreme Court Practice, drawing on his prior role as Acting U.S. from 2015 to 2017, during which he argued multiple cases before the . Under his leadership, the practice has handled high-stakes matters involving voting rights, tribal sovereignty, and constitutional issues, with six firm lawyers presenting arguments in the U.S. across the last four terms as of 2025. Adam G. Unikowsky, a partner in the appellate group, has argued 12 cases before the , including representations in Williams v. Washington on October 7, 2024, challenging aspects of federal , and Acheson Hotels, LLC v. Laufer addressing standing in accessibility disputes. His work emphasizes rigorous analysis of precedent and in complex federal appeals. Peter Davis joined as a partner in the office on July 7, 2025, enhancing the firm's appellate capabilities with his experience in and federal court litigation from prior roles at . These partners contribute to the firm's historical tally of over 100 arguments, focusing on outcomes that advance client interests through targeted advocacy rather than ideological alignment.

Prominent Alumni and Contributions

John Paul Stevens, who practiced at the predecessor firm to Jenner & Block from 1949 until 1970, rising to partner, developed expertise in antitrust litigation that informed his later judicial career. Appointed to the in 1975 by President , Stevens served as an associate justice until his retirement in 2010, authoring over 600 opinions and dissenting in landmark cases on issues including and presidential authority. His firm's emphasis on rigorous appellate advocacy and complex commercial disputes contributed to his reputation for methodical legal analysis, as evidenced by his pre-judicial work defending clients in federal courts. More recent alumni include Amir H. Ali, an associate at Jenner & Block from 2013 to 2017, where he handled Supreme Court arguments, including a successful win in Welch v. United States on retroactivity of sentencing guidelines. Confirmed in 2024 as a U.S. District Judge for the District of Columbia, Ali's early exposure to high-stakes federal litigation at the firm equipped him for clerkships and subsequent judicial roles focused on civil rights and constitutional matters. Sunil R. Harjani, who served as an associate at the firm from 2000 to 2001 and 2002 to 2004, gained experience in federal civil litigation before advancing to magistrate judge and, in 2024, confirmation as a U.S. District Judge for the Northern District of Illinois. His Jenner tenure involved arguing appeals in the Seventh Circuit, building skills in securities and regulatory disputes that supported his later SEC service and magistracy handling over 1,000 matters. Donald B. Verrilli Jr., a partner at Jenner & Block for two decades until 2009, co-chaired the appellate and practice, arguing cases on and First issues. As U.S. from 2011 to 2016, he represented the government in over 60 arguments, including defenses of the , drawing on firm-honed strategies for complex constitutional advocacy. Post-tenure, Verrilli continued in elite appellate roles, underscoring the firm's training in predictive and persuasive briefing.

Controversies and Criticisms

Allegations of Partisan Engagement

Critics have alleged that Jenner & Block exhibits an ideological tilt in its pro bono engagements, disproportionately favoring progressive causes over conservative ones, based on patterns in amicus curiae filings at the U.S. Supreme Court. A 2024 analysis of likely pro bono amicus briefs by Am Law 100 firms from October Terms 2018–2021 found that Jenner & Block submitted 34 such briefs, with 25 (74%) supporting liberal positions and only 9 supporting conservative positions, ranking the firm fourth among those with the highest volume of liberal-leaning pro bono filings. In high-salience cases such as Dobbs v. Jackson Women's Health Organization, Bostock v. Clayton County, and Fulton v. City of Philadelphia, the firm's pro bono briefs exclusively aligned with liberal outcomes. Specific pro bono efforts underscore this pattern, including representation of detainees challenging their detention, as in the 2022 case involving a high-value detainee eligible for release after 19 years of incarceration without trial. The firm has also filed briefs defending protections against discrimination for transgender students in the Fifth, Sixth, and Tenth Circuits in 2024, and received honors from for civil rights work supporting LGBTQ+ communities. In contrast, the firm's paid representations have included defense of tobacco companies such as and in Engle-progeny litigation, appealing adverse judgments related to smoking-related claims dating back to 2012. Such engagements, often viewed as aligning with industry interests against regulatory or plaintiff pressures, provide a counterbalance to pro bono activities but do not offset the documented asymmetry in unpaid ideological advocacy. Jenner & Block has countered such allegations by emphasizing its commitment to the over partisan considerations, stating that work spans a broad spectrum including constitutional challenges, death penalty cases, and support for non-profits and small businesses without regard to political alignment. The firm maintains that selections reflect opportunities to advance justice and professional obligations rather than ideological preferences.

2025 U.S. Government Executive Order

On March 25, 2025, President issued 14246, titled "Addressing Risks from Jenner & Block," which suspended security clearances for attorneys at Jenner & Block LLP and restricted the firm's access to federal facilities and contracts. The order cited the firm's alleged involvement in "" tactics and representations opposing interests of the prior administration, including hiring former prosecutor , as posing and ethical risks warranting such measures. It directed federal agencies to refrain from engaging the firm for work and to review existing relationships, building on prior orders like EO 14230 targeting similar firms. Jenner & Block filed a lawsuit in the U.S. District Court for the District of Columbia on March 28, 2025, arguing the order violated the First Amendment by retaliating against the firm's client representations and speech. On May 23, 2025, U.S. District Judge John D. Bates granted a , ruling the order unconstitutional as viewpoint discrimination lacking sufficient justification beyond political disagreement with the firm's cases. The Department of Justice appealed the decision to the U.S. Court of Appeals for the D.C. Circuit on July 21, 2025, contending the order advanced legitimate government interests in preventing perceived abuses without infringing core rights. The Trump administration defended the order as a necessary response to firms enabling adversarial legal actions against functions, emphasizing ethics and security over unrestricted advocacy. Critics, including the and , countered that it exemplified overreach punishing protected legal , potentially chilling attorneys from taking controversial cases regardless of . As of October 2025, the appeal remains pending, with compliance paused pending resolution, though the firm has resumed normal operations under the .

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