Kathleen (Katie) M. O'Sullivan Partner

Perkins Coie is proud to announce that 388 of its lawyers have been recognized by Best Lawyers® 2024. A total of 275 attorneys were selected by their peers for inclusion in the 2024 edition of The Best Lawyers in America® and 113 attorneys were selected for inclusion in the 2024 edition of Best Lawyers: Ones to Watch.

Perkins Coie is proud to announce that 30 of its lawyers from 11 metropolitan areas have been named 2024 Lawyers of the Year by Best Lawyers®.

Perkins Coie is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America’s Leading Lawyers for Business, as one of the top law firms in the United States.

Katie O’Sullivan, Meredith Weinberg, Marten King, Shane Swindle, and Luci Davis were mentioned in the Law360 article “Boeing Can't Escape Rocket Site Cleanup Case" regarding their representation of Boeing.

Michael Huston, Katie O’Sullivan, and Lauren Ruben were mentioned in the Law360 article “Justices Want Biden Admin. Input On $49M Superfund Review" about their representation of Weyerhaeuser.

Michael Huston, Katie O’Sullivan, and Lauren Ruben were mentioned in the Law360 article “Paper Cos. Ask Justices To Pass On $49M Superfund Review" about their representation of Weyerhaeuser.

Perkins Coie is proud to announce that 403 of its attorneys have been recognized by Best Lawyers® 2023. A total of 279 attorneys were selected by their peers for inclusion in the 2023 edition of The Best Lawyers in America® and 124 attorneys were selected for inclusion in the 2023 edition of Best Lawyers: Ones to Watch.

Katie O’Sullivan, Meredith Weinberg, Marten King, Shane Swindle, and Luci Davis were mentioned in the Law360 article “Boeing Says Feds Want To Break Rocket Site Cleanup Deal" regarding their representation of Boeing.

Perkins Coie is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America’s Leading Lawyers for Business, as one of the top law firms in the United States.

Perkins Coie is celebrating its 110-year anniversary this week, sustaining a commitment to a broad range of leading companies and innovative clients that has driven the firm’s growth in recent decades as a strategic legal advisor to many of the world’s preeminent brands.

Perkins Coie is honored to be recognized by the Weyerhaeuser Company, one of the world’s largest private owners of timberlands, as the recipient of its inaugural Law Department Diversity, Equity, and Inclusion Award.

Perkins Coie is proud to announce that 367 of its attorneys were recognized by the 2022 Best Lawyers®. A total of 278 attorneys were selected by their peers for inclusion in the 2022 edition of The Best Lawyers in America® and 89 attorneys were selected for inclusion in the 2022 edition of Best Lawyers: Ones to Watch.

Perkins Coie is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America’s Leading Lawyers for Business, as one of the top law firms in the United States.

Perkins Coie is proud to announce that 358 of its attorneys were recognized by Best Lawyers® 2021. A total of 290 attorneys were selected by their peers for inclusion in the 2021 edition of The Best Lawyers in America® and 68 attorneys were selected for inclusion in the inaugural edition of Best Lawyers: Ones to Watch.

Perkins Coie LLP is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America’s Leading Lawyers for Business, as one of the top law firms in the United States. For 2020, the firm is recognized for 55 practice areas and 141 individual attorneys, marking an increase from the 52 practices areas and 139 recognized attorneys a year ago.

Perkins Coie is pleased to announce that it has appointed Seattle-based Partner Kathleen M. O’Sullivan as chair of the firm’s 16-member Executive Committee.

Perkins Coie is proud to announce that 282 of its attorneys were selected by their peers for inclusion in the 2020 edition of The Best Lawyers in America®.

Perkins Coie is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America’s Leading Lawyers for Business, as one of the top law firms in the United States. For 2019, the firm is recognized in 52 practice areas and 139 individual attorneys.

Perkins Coie is proud to announce that 277 of its attorneys were selected by their peers for inclusion in the 2019 edition of The Best Lawyers in America®.

Perkins Coie is proud to announce that it has again been ranked by Chambers & Partners, publishers of Chambers USA: America's Leading Lawyers for Business, as one of the top law firms in the United States. For 2018, the firm is recognized in 51 practice areas and 130 individual attorneys were also recognized.

Perkins Coie is proud to announce that 281 of its attorneys were selected by their peers for inclusion in the 2018 edition of The Best Lawyers In America®.

Perkins Coie is pleased to announce that it has appointed three partners to leadership positions – two of whom will lead national practice groups. Katie O’Sullivan was named chair of the firm’s national Commercial Litigation practice; Karen McGaffey was named chair of the firm’s national Environment, Energy and Resources (EER) practice; and Cori Gordon Moore was named leader of the firm’s Commercial Litigation practice in Seattle.

Perkins Coie is proud to announce that 252 of its attorneys were selected by their peers for inclusion in the 2017 edition of The Best Lawyers In America®, the oldest and most respected peer-review publication in the legal profession.

Perkins Coie attorneys were mentioned as counsel in "9th Circ. Affirms Jet Financier's $8M Win Against Cargo Co.," a Law360 article, regarding damages suffered by Global BTG LLC after National Air Cargo Inc. backed out of a letter of intent, which also quoted partner Don Kula.

Perkins Coie is pleased to announce that four Seattle-based partners have been appointed to leadership positions in the firm. David McShea has been appointed as the Chair of the firm’s Executive Committee, Katie O’Sullivan has been appointed to lead the firm’s Commercial Litigation practice in Seattle, Colonel Betz has been named Chair of the firm’s Trust & Estate Planning practice and Amy Tucker has been named Personnel Chair of the Trust & Estate Planning practice.

Perkins Coie is proud to announce that 35 of its attorneys have been named 2016 Lawyers of the Year by Best Lawyers®, the oldest and most respected peer-review publication in the legal profession.

Perkins Coie is proud to announce that 245 of its attorneys were selected by their peers for inclusion in the 2016 edition of The Best Lawyers In America®, the oldest and most respected peer-review publication in the legal profession; a more than 10 percent increase over the 221 firm attorneys recognized by Best Lawyers in the 2015 edition.

Katie O’Sullivan, partner and co-chair of Perkins Coie’s Appellate practice, has been elected to the Council of The American Law Institute (ALI).

Perkins Coie is proud to announce the launch of Food Litigation News, a new blog focused on food and beverage labeling and nutritional content law.  Food Litigation News shares timely insights into litigation developments, emerging arguments and legal challenges facing food and beverage manufacturers and related industries.