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Jonathan P. Soifer

Jonathan P. Soifer

Managing Member

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Jonathan clerked for Polster Lieder while attending Washington University School of Law and joined the firm in 1989 after passing the Missouri Bar.  He served as managing member for the firm from 2010 through 2012 and after that he served on the management committee for the firm.  In August 2014, Jonathan was once again elected managing member for the firm.

 Jonathan provides intellectual property legal services for many individuals and small, medium and large companies as well as major corporations. He concentrates his practice in patent, trademark and copyright matters. He has extensive experience in preparing and prosecuting patent and trademark applications. He conducts patentability and freedom-to-operate searches, infringement and validity studies, prepares and negotiates licenses and other agreements, and conducts trademark clearance searches.

Practice Areas:

Patent, trademark, intellectual property, computer law and Internet law


Juris Doctor: Washington University School of Law, 1989; Phi Alpha Delta
Bachelor of Science: Chemical Engineering, Washington University, 1985

Admitted to Practice:

U.S. Patent and Trademark Office
U.S. District Court, Eastern District of Missouri
U.S. District Court, Central District of Illinois
U.S. Court of Appeals, Federal Circuit
U.S. Court of Appeals, Eighth Circuit

Industry Experience:

Jonathan has provided services in a diverse range of technologies including agricultural equipment, automotive, bearings, boat docks/marinas, chemical processes and coatings, clothing, medical and dental instruments, playground equipment, safety equipment and software.

Activities and Bar Associations:

Bar Association of Metropolitan St. Louis (Member, Patent, Trademark and Copyright Section)
The Missouri Bar

Speaking/Written Publications:

“Protection of Intellectual Property,” Co-presenter, Polster, Lieder, Woodruff & Lucchesi, 1993

“Ethical Issues In Trademark Searches,” Bar Association Of Metropolitan St. Louis, 1994

“Protecting Your Intellectual Property Overseas and in China,” co-presenter, Southern Illinois University-Edwardsville Center for International Trade, 2006

“Advanced Topics in Technology Patent Law, Co-presenter,” Center for Emerging Technology, 2013

“Property Law Overview and Client Counseling For The General Practitioner,” co-presenter, Polster, Lieder, Woodruff & Lucchesi, 2013

Professional and Personal Profile:

Jonathan is a member of the St. Louis Chapter of Rotary International, the World’s largest international service organization.

Jonathan, his wife and two children live in St. Louis County. Jonathan enjoys hiking, biking, photography and theater.