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Theodore J. Angelis

Fax +1.206.370.6006

Theo Angelis is an intellectual property and appellate litigator who appears in trial and appellate courts, in administrative tribunals, and in arbitration proceedings throughout the United States.

Mr. Angelis’ unique experience—as an intellectual property litigator who co-chaired the firm’s appellate practice and has an active appellate practice—allows him to craft and present especially persuasive and compelling arguments. He also provides clear and strategic advice to clients facing unsettled or complex legal issues, and he assists them in efficiently solving problems and minimizing risk.

Mr. Angelis has litigated patent matters before the U.S. International Trade Commission and U.S. District Courts in California, Delaware, Louisiana, Pennsylvania, Texas, and Washington. Mr. Angelis’ appellate practice focuses primarily on the Federal and Ninth Circuits, as well as the D.C. Circuit, where Mr. Angelis served as a law clerk. Mr. Angelis also regularly handles appeals in state appellate courts. Mr. Angelis’ appellate litigation experience spans a broad range of issues, including constitutional law, real property, intellectual property, Internet and cyber law, defamation, RICO, discovery sanctions, and asylum. At the trial court level, Mr. Angelis also litigates non-patent matters, but he focuses on intellectual property litigation—with a special emphasis on cyber and technology law—as well as Constitutional and real property litigation.

Mr. Angelis has received numerous awards and honors. He is listed in the Best Lawyers in America, and he recently was recognized by the King County Bar Association as Mentor of the Year. Earlier in his career, the King County Bar Association named him Outstanding Young Lawyer. Mr. Angelis is the editor of the Washington Lawyer’s Practice Manual, and while in law school served as articles editor for the Yale Law Journal and managing editor of the Yale Law & Policy Review.

Mr. Angelis is a frequent speaker and presenter on strategic litigation issues, including legal ethics, privacy for electronic communications, internal investigations, developments in Internet law, and effective litigation strategies.

Professional Background

  • Clerkship, Hon. Stephen F. Williams, U.S. Court of Appeals for the District of Columbia Circuit, 1999-2000


  • Listed in Best Lawyers in America
  • King County Bar Association Mentor of the Year (2012)
  • King County Bar Association’s Outstanding Young Lawyer (2006)
  • Recipient of NWIRP Amicus Award (2011) (awarded to Castillo litigation team)
  • Selected to the Washington Rising Stars List (2004-2009, 2011, 2012)

Professional/Civic Activities

  • Editor, Washington Lawyers Practice Manual.
  • Chair, CLE Committee of the Federal Bar Association for the Western District of Washington.
  • Co-Chair, K&L Gates’ Pro Bono Practice in Seattle.
  • Leadership Tomorrow, Class of 2008
  • Trustee, St. Demetrios Greek Orthodox Church
Patent Litigation
  • Cequint Inc. v. Apple, Inc. (D. Del.). Represented Cequint Inc. in asserting claims against Apple, Inc. for infringement of two patents related to Caller ID technology.
  • Krausz Industries v. Romac Industries (W.D. Wash.). Represented Krausz Industries in successfully pursuing claims and enforcing a settlement against Romac Industries.
  • Carnegie Mellon University v. Marvell (W.D. Pa.). Assisted in representation of Carnegie Mellon in asserting claims against Marvell.
  • Eastman Kodak Co. v. Apple Inc. and Research in Motion (U.S.I.T.C.), (N.D. Tex.), and (W.D.N.Y.). Represented Eastman Kodak Company in asserting claims against Apple, Inc. and Research In Motion (RIM) involving Kodak’s digital capture patents.
  • Brooks Manufacturing Co. v. Dis-Tran (W.D. Wash.) and (W.D. La.). Represented Brooks Manufacturing in asserting patent claims against competitor allegedly infringing client’s patented method.

  • Panagacos v. Towery (9th Cir.) – Represented Army Force Protection Chief Tom Rudd in Bivens action brought by protesters. Obtained dismissal of the majority of protestors’ claims, with others pending on appeal.
  • Marina Homeowners Association v. The Stratford At The Marina, LLC (Wash. Ct. App. Div. I). Successfully overturned $2 million judgment entered against client—while represented by other counsel—under the Washington CPA, Washington Condominium Act, and various common law causes of action.
  • Castillo v. Skwarski et al. (9th Cir. and W.D. Wash.). Represented plaintiff in successful Bivens action against Department of Homeland Security (“DHS”). Case was settled by the Ninth Circuit Mediator while the government’s appeal was pending. Settlement included a large monetary payment and written apology, as well as a prior commitment to alter DHS practices. The settlement led Northwest Immigrants Rights Project to award K&L Gates its Amicus Award for 2011, and the case was featured at the National Hispanic Bar Association’s annual meeting.
  • United States v. Philip Morris USA, Inc. (D.C. Circuit). Represented a major investment bank in analyzing the United States’ RICO action against all major tobacco companies. Successfully predicted outcome of interlocutory appeal on unsettled RICO remedies issue.
  • Microsoft Corp. v. Synergy6 et al. (Wash. Ct. App Div. I). Successfully defeated numerous attempts to obtain interlocutory review of trial court rulings regarding personal jurisdiction, constitutional limits on statutory damages, and discovery rulings.
  • State v. Athan (Wash. Supreme Court). Represented Washington State Bar Association as amicus curiae arguing that police should not be allowed to pose as a suspect’s lawyer to gather incriminating evidence.
  • Smith v. Behr Process Corp. (Wash. Ct. App. Div. II). Represented Behr Process Corporation, as newly appearing appellate counsel, seeking to overturn a default judgment entered as a discovery sanction.
  • Pro bono appeals. Regular supervision and participation in pro bono appeals, primarily in the U.S. Court of Appeals for the Ninth Circuit.

Other Constitutional and Governmental Litigation and Advice
  • Microsoft v. Synerg6, Inc. et al. (King County Super. Ct.). Successfully defended Microsoft against defamation claims arising from statements made during joint press conference held by New York Attorney General Eliot Spitzer and Microsoft General Counsel.
  • Sanders v. City of Seattle (King County Super. Ct.). Successfully represented Westlake Center and defeated argument that Seattle Monorail’s public easement through Westlake Center was a public forum.
  • Vanmoor v. Alexa Internet (D.D.C). Defeated defamation claims against Amazon.com’s Alexa Internet service.
  • Skagit County v. Samish and Swinomish Tribes (Interior Board of Indian Appeals). Represented Skagit County in complex land use litigation related to development of lands that tribes sought to convert from fee status to Federal Trust land.
  • C-Tran. Represented public transit authority in developing policies for non-commercial advertising on buses and other public transportation.
  • City of Blaine. Represented City in resolving claims related to exhumation of native remains during construction of sewage treatment plan on Semiahmoo.

Intellectual Property Litigation and Advice
Mr. Angelis focuses a substantial portion of his practice on intellectual property litigation, with a special emphasis on cyber and technology law. Mr. Angelis not only represents clients in high profile litigation involving patent, trademark, and copyright infringement, but also provides counseling regarding emerging issues and unsettled legal issues, and pending legislation. Mr. Angelis provides guidance on all manner of cyberlaw issues and the use and misuse of intellectual property online. Topics of recent consultations include: agreements and policies related to cloud computing services; possible causes of action against sophisticated hackers; privacy for digital communications, and domain cybersquatting. Mr. Angelis has also worked with federal, state, and international governmental agencies in the battle against internet misconduct. He speaks frequently on emerging trends in internet law and challenges inherent in seeking to protect computer systems and intellectual property. Representative engagements include:

Internet and Cyber Law
  • Represented major cloud computing provider in analysis of key policies and agreements related to cloud services.
  • Represented Microsoft Corporation in nationwide Internet safety and security litigation efforts, including extensive litigation in anti-spam, anti-phishing, anti-spyware, child protection, and related enforcement efforts.
  • Doe v. Project Fair Bid, Inc. (W.D. Wash. 2011).  Served as lead counsel for venture capital funds sued in nationwide class action arising from investments in penny auction website. 
  • Represented anti-spyware software developer-in litigation and disputes in both Europe and the United States-against charges that its software had malicious features.
  • Advised major wireless carrier regarding issues related to wireless updates of software.
  • Advised major smart phone manufacturer in questions related to its social networking.