Peter Jochens is an attorney in the Intellectual Property practice group, focusing on the preparation and prosecution of patent applications in the chemical and mechanical arts.

Admitted to practice before the U.S. Patent and Trademark Office, Peter has experience conducting prior art searches and patentability analyses, drafting and reviewing patent applications, and drafting Office Action responses. He also has experience with noninfringement and freedom-to-operate opinions and analyses.

An experienced former process engineer, Peter also has significant knowledge of the medical device industry and applies his deep technical knowledge when working with clients. His experience also includes electrochemical sensors and semiconductor heterostructure manufacturing and processing.

Services and Industries


Prior to joining Armstrong Teasdale full time, Peter worked at the firm as a summer associate, Carl B. Horton Patent Law Fellow and a law clerk.

Before law school, he worked as a process engineer for an international medical equipment company, where he provided technical knowledge in the support of new product development, created and implemented lean/Six Sigma initiatives, and worked to identify and improve critical process parameters.


  • Washington University School of Law  (J.D., magna cum laude, 2020)
    • Order of the Coif
    • Order of Barristers
    • Washington University Law Review, Senior Editor
    • Intellectual Property Law Society, President
    • Dean’s Service Award
  • University of Notre Dame  (B.S., 2015)
    • Chemical Engineering
    • Dean's List


  • Missouri
  • U.S. Patent and Trademark Office

Charitable and Civic Involvement

  • Sling Health, National Legal Chair (2020-present)
  • Sling Health, St. Louis Chapter Legal Chair (2019-2020)


  • National Runner Up and Southern Region Champion, Giles S. Rich Moot Court
  • Best Brief Award, Giles S. Rich Moot Court
  • CALI Awards for Excellence in Patent Law, Patent Drafting, Property Law, and Trusts & Estates
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