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Jacob E. Vilhauer Jr.



Jake Vilhauer joined this firm in February of 1971, and became a partner in 1974. 

He is a member of the Oregon State Bar Association and is admitted to practice before the U.S. Patent and Trademark Office. 


His other admissions include U.S. District Court for the District of Oregon; U.S. Court of Appeals for the Ninth Circuit; and U.S. Court of Appeals for the Federal Circuit. 

He has practiced intellectual property law in this firm for a wide variety of companies which manufacture mechanical and electrical industrial equipment of various types, as well as sports-related products.

Before joining this firm, he worked for a major international lift truck manufacturing company.

For his entire career, Jake has practiced principally in the fields of patent procurement, patent enforcement, patent infringement defense, patent opinions, technology transfer, licensing and joint technology development.  He has been continually selected by his peers for inclusion in The Best Lawyers in America, Oregon Super Lawyers, and Portland's Best Lawyers. 


He has served on numerous occasions as an expert witness in litigations with respect to patent infringement, invalidity, damages and licensing issues.

His principal U.S. and foreign patent procurement experience includes the technical areas of:

  • Lift truck load handling attachments

  • Semiconductor wafer probes and probe stations

  • Excavating and construction equipment

  • Electronic locks

  • Industrial paper cutting machinery

  • Permanent magnet electric motors

  • Hybrid automotive drive systems

  • Automobile transporting systems

  • Firearms and ammunition

  • Refrigerated transporting systems

  • Wood waste  recycling processes

  • Domestic sewage treatment systems

  • Debit card packaging

His principal transactional experience includes negotiation and drafting of agreements of the following types:

His patent enforcement experience includes:

  • Successful U.S. litigation and resultant industry-wide licensing of firearm and ammunition patents

  • Successful multiple U.S. litigations enforcing patents on semiconductor wafer probe stations

  • Successful U.S. litigation and resultant industry-wide licensing of  compound archery bow patent

  • Successful foreign litigations enforcing lift truck load handling attachment patents

  • Successfully resisting patent reexamination proceedings in U.S. Patent and Trademark Office filed by accused infringers

  • Successfully resisting patent opposition and nullity proceedings in foreign countries filed by accused infringers.

His patent defense experience includes successful defense of infringement claims and litigations, and the preparation of noninfringement opinions, with respect to U.S. and foreign patent disputes in the fields of:

  • Semiconductor wafer probe stations

  • Lift truck load-handling attachments

  • Sports equipment and apparel

  • Debit card packaging

  • Electronic locks

  • Engine turbine blades

Jake E. Vilhauer
(503) 227-5631 (Phone)
(503) 228-4373 (Fax)

Practice Areas



University of Oregon School of Law, J.D. 

Oregon State University, B.S., Mechanical Engineering


Bar Admissions


U.S. Patent and Trademark Office

U.S. District Court for the District of Oregon

U.S. Court of Appeals, Ninth Circuit

U.S. Court of Appeals, Federal Circuit


Best Lawyers 2014 Patent Law "Lawyer of the Year"

Martindale-Hubbell Top Rated Lawyer

IAM Patent 1000- World's Leading Patent Professionals

Super Lawyers

Best Lawyers in America

Chambers IP Leading Individual 

Martindale-Hubbell AV Preeminent

Portland's Top Lawyers

Oregon's Top Lawyers

Bronze Star Medal

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Trade Organizations
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