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William Jay

Work +1 202 346 4190


Partner Co-Chair, Appellate Litigation


William Jay WILLIAM M. JAY Partner Co-Chair, Appellate Litigation moc.retcorpniwdoog@yajw Washington DC | +1 202 346 4190 Download vCard Visit WILLIAM JAY's profile in Linkedin Willy Jay is a partner in and co-chair of Goodwin Procter’s Appellate Litigation Practice and is head of the Litigation Department in the firm’s Washington, D.C. office. A former Assistant to the Solicitor General, Mr. Jay has extensive experience with litigation in the U.S. Supreme Court and U.S. Courts of Appeals. He has argued 13 cases before the Supreme Court, briefed more than 30 cases on the merits and briefed more than 150 cases at the certiorari stage. In the 2014 Term, he argued and won two significant intellectual-property cases before the Supreme Court, both by a vote of 7-2: Teva Pharmaceuticals USA, Inc. v. Sandoz, Inc., a landmark patent case setting a new standard of review for claim construction, and B&B Hardware, Inc. v. Hargis Industries, Inc., an important decision on the intersection between agency decisions and IP litigation. Mr. Jay also has significant experience with cases in the Court’s original jurisdiction.


J.D., 2001 Harvard Law School (magna cum laude) A.B., 1998 Harvard College (magna cum laude)

United States: Dispute resolution


Within: Leading lawyers

William Jay - Goodwin

Within: Appellate

Goodwin’s team has ‘a truly in-depth understanding of appellate law and a close familiarity with the procedures applicable at the courts of appeals’. Practice co-chair William Jay attracts commendation from clients for his ability to ‘cut to the chase and articulate clear arguments’, as well as for being ‘one of the very few appellate attorneys who have mastered the intersection between technology, patent law and appellate procedures’. Jay and recently promoted partner David Zimmer (Boston) secured a victory for petitioner Wescley Pereira at the US Supreme Court, which sided with Pereira in adopting an immigrant-friendly interpretation of the removal provisions under the Immigration and Nationality Act. In another highlight at the US Supreme Court, the trio of Jay, co-chair Kevin Martin and Brian Burgess led the team on representing the Puget Sound Indian Tribes as respondents in Washington v United States, a case involving the interpretation of a set of historic treaties protecting the tribes’ fishing rights.

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United States: Industry focus

Environment: regulatory

Within: Environment: regulatory

Goodwin is instructed in matters involving contaminated sediment sites, hardrock mining, Superfund mega sites, natural resource damage claims, multi-media environmental enforcement proceedings and settlements, vapour intrusion problems, and complex compliance settlements. The group continues to act as regular outside counsel to longstanding client Newmont Mining in relation to environmental, public lands, and energy matters, including representing the client before the EPA, the Office of Management and Budget, and the DOI in connection with the EPA’s initiative to promulgate financial responsibility requirements for the hardrock mining industry under CERCLA. Additionally, the team advises on legislation related to the management of mercury generated as a by-product of gold mining, and also works with industry and environmental groups and Congressional staffers to develop “Good Samaritan” legislation that would relax liabilities and requirements imposed by the federal environmental laws on mining companies that voluntarily remediate sites polluted in the past by third parties. Contacts in Washington DC include Michael Giannotto and William Jay. Elise Zoli joined Jones Day, Gregory Bibler left to set up his own firm, and Laurence Kirsch moved to Sidley Austin LLP in March 2019.

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United States: Intellectual property

Patents: litigation (full coverage)

Within: Patents: litigation (full coverage)

Goodwin impresses with 'experienced, savvy, solutions-oriented counsel' that is 'responsive' and 'creative'. Especially adept at litigation concerning pharmaceuticals and biosimilars, the group also has expertise in technology-related mandates. In a recent highlight, Washington DC's William Jay is representing respondent Teva Pharmaceutical in a Supreme Court case against Helsinn involving the interpretation of a stipulation in the America Invents Act regarding the sale of inventions under a confidentiality agreement. Additionally, the practice won two district court cases for Dr. Reddy's Laboratories against Reckitt Benckiser and MonoSol X, concerning a generic version of opioid use disorder drug Suboxone that the client sought to launch. Actavis Laboratories, Facebook and Gillette also feature on the client roster. New York's  Mark Abate and 'first-rate strategic thinker' Elaine Blais in Boston are key contacts. Trio Ronald PabisStephen Shahida and Patrick McCarthy in Washington DC, who joined from Greenberg Traurig LLP alongside Mark Davis, 'are an incredible team'. Darryl Woo joined the San Francisco office from Vinson & Elkins LLP. Marcia Sundeen and Marta Gross retired. Counsel Brian Robinson left for Novartis.

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