Patent & Trademark Attorney Profile


William K. Nelson


Mr. William K. Nelson is a registered patent attorney at with several years of experience in practicing intellectual property (IP) law, particularly in the areas of preparing and prosecuting patent, trademark, and copyright applications, patentability and infringement analyses, strategic IP counseling, and enforcing intellectual property rights.  Mr. Nelson has been practicing before the United States Patent and Trademark Office since 2008 and has substantial experience in prosecuting patents in the technical areas of biotechnology, life sciences, medical devices, silicon and silane chemistry, semiconductor devices, and industrial and mechanical devices.

Mr. Nelson received his J.D. from San Joaquin College of Law in 2011. While in attendance at SJCL, he received Witkin Awards for Academic Excellence in Business Associations and Water Law.

Before turning to the practice of law, Mr. Nelson received a Bachelor of Arts degree in Psychology and a Master of Science degree in Biology (with distinction) from California State University, Fresno.  Mr. Nelson’s graduate studies and research focused on non-toxic, endocrine-mediated population control of the riceland tadpole shrimp Triops longicaudatus.  His research was published several academic articles and abstracts, including an article in the peer-reviewed journal Comparative Biochemistry and Physiology.  Mr. Nelson also previously taught anatomy and physiology as an adjunct instructor at California State University, Fresno.


  • San Joaquin College of Law (J.D., 2011)
  • California State University, Fresno (M.S., with distinction, Biology, 2005).
  • California State University, Fresno (B.A., Psychology, Biology minor, 2002).

Admitted to Practice

  • All State Courts Within the State of California (2011)
  • United States District Court, Eastern District of California (2011)
  • United States Patent and Trademark Office (2008)
  • United States District Court, District of Colorado

Professional Activities

  • State Bar of California, Intellectual Property Law Section
  • American Bar Association, Intellectual Property Law Section
  • American Intellectual Property Law Association
  • Fresno County Bar Association

"Sierra IP Law exceeded our expectations
and continues to provide our firm with excellent results."