Patrick Santos

Managing Partner

Pat Santos has been a software engineer for 12 years including over 7 years at Microsoft. He worked on the Visual C++, XBox and Windows XP teams as well as in Microsoft Research. His work at Microsoft resulted in being named co-inventor on three patents (U.S. Patent Nos. 7,174,540; 7,321,897 and 8,065,307). Mr. Santos has also been a C/C++ instructor at Bellevue College, and an adjunct instructor for the University of Washington.

Prior to Han Santos, PLLC, Mr. Santos was a partner at a national law firm where he was co-chair of their IP Counseling Group. Prior to becoming a lawyer, Mr. Santos was a Patent Analyst for Microsoft Legal and Corporate Affairs (LCA) where he was an LCA scholar. Mr. Santos was a patent examiner at the U.S. Patent and Trademark Office first specializing in cryptography, and then later in database applications. Presently, Mr. Santos is a seconded IP attorney for two major Seattle area corporations where he provides IP conflict matter and IP strategy counsel.

Technologies that Mr. Santos is familiar with include database systems, operating systems, compilers and interpreters, IP networks, cellular networks, cloud infrastructure and cryptography.

“At HS, we believe that a well-crafted IP strategy creates business options that are not ordinarily evident. For us, success is not just giving counsel, but using our legal creativity, our industry experience and our technical knowledge to provide a competitive advantage for our clients.”

Practice Areas:

  • IP Strategy
  • In-bound Licensing
  • Opinion Work
  • Out-bound Licensing
  • IP Acquisition Due Diligence
  • Standards/Patent Pools
  • Patent Collateralization
  • Patent Valuation


  • State Bar of Washington
  • U.S. District Court (Western District of Washington)
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Supreme Court


  • J.D. - Seattle University School of Law
  • Graduate Studies – American University, Washington College of Law
  • M.S.E. Software Engineering - Seattle University
  • B.S. Mathematics – University of Washington, Seattle

Languages Spoken:

  • English