Maurice J. Pirio - Perkins Coie LLP

Maurice J. Pirio

Listed in Best Lawyers since 2005
Phone: 206-359-8548

Maurice Pirio is a partner with the firm's Patent Group.  Maurice has over 20 years of legal experience and 10 years of technical experience.  His practice focuses on protecting the inventions of his clients.  He assists his clients by analyzing their technologies, developing strategies for protecting their inventions, and implementing those strategies in the U.S. and internationally.  Maurice also advises his clients on infringement, invalidity, litigation, valuation, due diligence, and acquisition issues. 

He has represented a variety of institutions including Microsoft,, General Electric, Cray, Boeing, Lawrence Livermore National Laboratory, HTC, University of Washington, and University of Illinois.  Maurice’s educational background, which includes computer-related B.S. and M.S. degrees, provides him with a solid foundation in operating systems, computer architecture, theory of computation, and algorithmic analyses. 

His educational background, technical experience, and legal expertise make him uniquely qualified. Some of Maurice's career highlights include: 

Prosecuting the first software patent filed by Microsoft Corporation in the 1980s that covered various operating system techniques

Preparing and prosecuting’s 1-Click patents in the U.S. and internationally

A USPTO Board of Patent Appeals and Interferences decision establishing fundamental principles for patentability of mathematical algorithms 

A Federal Circuit en banc decision overruling prior case law relating to the benefit of the filing date of an earlier-filed application.

He has prosecuted software patents in a wide range of technologies including operating systems, compilers, object-oriented programming, natural language processing, encryption, compression, information retrieval, speech recognition, real-time communications, multi-threaded computing, genetic algorithms, parallel algorithms, computer security, graphical user interfaces, computer security, satellite-based system, radar systems, bioinformatics, and telecommunications. 

Maurice has extensive experience with appeals before the USPTO Board of Patent Appeals and Interferences.  He has participated in reexaminations before the USPTO and managed oppositions internationally including in Australia, New Zealand, and Europe. 

His litigation experience includes trial and appeal experience.  Maurice has testified on validity, non-infringement, and prosecution issues in many lawsuits including Stac Electronics v. Microsoft Corp.,Mentor Graphics Corp. v. Quickturn Design Systems, Inc., and Inc. v., Inc. 

A frequent publisher and lecturer in the United States and internationally, Maurice has presented on software-related legal issues including developing and presenting a multi-day Practice Resource Group course on procuring and enforcing software patents.

University of CaliforniaBS Seattle University School of LawJ.D.
Washington State Bar AssociationAmerican Bar AssociationWashington State Patent Law AssociationAssociation of Computing Machinery (ACM)

Case History

Other Court Admissions
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Patent and Trademark Office

Client Comments

"I trust Maurice's judgment and legal analysis. He's my go-to patent attorney. He quickly understands complex technologies and can get right to the core of any invention."

"Maurice was known to me by reputation before we engaged him. My experience with him has uniformly been positive and has exceeded expectations. My organization's technical staff has consistently been impressed with the extent of his understanding of their specialty areas. He provides first-rate legal work and advice."

Office Location

1201 Third Avenue, Suite 4900
Seattle, WA 98101-3099
United States

Lawyer of the Year Awards

2012 Lawyer of the Year in Patent Law of the Seattle Metro Area
Maurice J. Pirio has earned a Lawyer of the Year award for 2012!

Practice Areas

Litigation - Patent
Patent Law