Photo of Adrienne J. Kosak


J.D., William & Mary Law School

B.S., magna cum laude, The Ohio State University; Phi Beta Kappa

Law Journals

Executive Articles Editor, William and Mary Bill of Rights Journal


Law Clerk for the Honorable Mary Ellen Coster Williams, U.S. Court of Federal Claims (2014-2015)

Bar and Court Admissions

District of Columbia Bar

Virginia Bar

U.S. Court of Appeals for the Federal Circuit

U.S. District Court for the Eastern District of Texas and Eastern District of Virginia

U.S. Court of Federal Claims

Adrienne serves as consulting counsel to Wiley Rein LLP. She represents clients in a variety of intellectual property matters, with a particular focus on trademark and copyright, enforcement and management, and litigation.

Representative Experience

  • Works with clients to implement effective intellectual property management and enforcement strategies.
  • Represents clients in intellectual property litigation, from pre-suit investigation through appeal.
  • Assists clients with trademark portfolio management including clearance, prosecution, maintenance, and counseling.
  • Member of trial team that successfully defended a major wireless communications company in a multi-million dollar patent infringement lawsuit.
  • Member of trial team that successfully defended a generic pharmaceutical company against claims of patent infringement in Hatch-Waxman litigation.
  • Offers pro bono services through the Washington Legal Clinic for the Homeless (WLCH), the D.C. Bar Association Pro Bono Program, and Washington Area Lawyers for the Arts (WALA).
  • Successfully appealed the denial of a social security disability claim before an administrative law judge.

Professional Experience

  • Legal Intern, Office of the Federal Public Defender (2007)


  • Named one of DC's "Rising Stars" for Intellectual Property Litigation by Super Lawyers magazine (2013-2014, 2018)

News & Insights