David T. McDonald - K&L Gates

David T. McDonald

Listed in Best Lawyers since 2001
Phone: 206-370-7957

Mr. McDonald's practice emphasizes technology-related intellectual property litigation, including strategic litigation arising from contract-based disputes.  He also regularly advises on matters of constitutional and statutory law relating to political parties.

Much of Mr. McDonald's practice has focused on software-related disputes. Before obtaining his law degree he worked as a computer programmer for an oil company and as a research assistant at the Dynamic Modeling Group of Project MAC at MIT. He has represented Microsoft Corporation in significant litigation since 1986, including leading the company’s defense in the historic Apple v. Microsoft “look and feel” litigation.

Mr. McDonald holds seven software-related patents.  He is the sole inventor of a system and method for efficiently processing messages stored in multiple message stores, and a co-inventor of six systems and methods for efficiently evaluating a structured message store for message redundancy, including message threads, processing the message store to identify unique and duplicate messages and for near duplicates, and identifying and categorizing messages extracted from an archived message store. 

Stanford UniversityBS Harvard Law SchoolJ.D.

Case History

Other Court Admissions
  • Supreme Court of the United States
  • United States Court of Appeals for the Ninth Circuit

Client Comments

"David brings sound judgment and a wealth of experience. He is a pleasure to work with."

-John Reagh
Washington Research Foundation

"David is a brilliant strategic thinker and very knowledgeable on intellectual property matters. He can marshal the resources of this very large firm to the specific needs of his client. He's an excellent counselor at litigation strategy."

"David is focused on client service -- he is responsive, proactive, and pragmatic, and always keeps me well informed on progress and status. He has a remarkable capacity to dig into the details, while not losing sight of the big picture. David is also a terrific case team manager, making sure his colleagues stay on task and don't stray onto side paths or spin their wheels. I particularly appreciate his sensitivity to cost, budgeting, and achieving cost savings."

"David McDonald leads an excellent IP litigation practice at K&L Gates. He is on top of matters and strategy, and marshals the firm's vast resources efficiently for clients. If you have a patent case come in, you should talk to him. He will offer you useful strategic analysis and make a heck of a pitch for the work."

-Liam Lavery
General Counsel
Valve Corporation

"David is a very effective and responsive lawyer. He has a high level of expertise and is attentive to client needs around both quality and cost effectiveness."

Office Location

925 Fourth Avenue, Suite 2900
Seattle, WA 98104-1158
United States

Lawyer of the Year Awards

2015 Lawyer of the Year in Copyright Law of the Seattle Metro Area
David T. McDonald has earned a Lawyer of the Year award for 2015!

Practice Areas

Copyright Law
Litigation - Intellectual Property
Litigation - Patent