"At Ater Wynne, we bring a TEAM-ORIENTED FOCUS to a client's issues. We're set up to provide the client with the particular expertise it needs without layers of red tape. We do the work with a high level of integrity. We're agile and deft in our responses and confident in our collective abilities."

– Michael (Sam) J. Sandmire, Partner

Paul B. Heynssens

Of Counsel

Paul B. Heynssens is a registered patent attorney (47,648), and counsels clients in a variety of intellectual property and technology matters including patent prosecution (US, PCT, and foreign), and portfolio management.  He has drafted and prosecuted patent applications in the areas of electronics, computer systems, computers, software, semiconductors, lasers, and mechanical devices, among others.

Mr. Heynssens has experience as an in house patent attorney with Microsoft’s Redmond campus.  At Microsoft, Mr. Heynssens helped establish a new patent prosecution group and chaired its training committee.  He has firm experience at the patent boutique firm of Christie Parker & Hale, where he was responsible for portfolio development for various clients, ranging from startups to multinationals.  He also has experience with large general practice firms, having worked at the Los Angeles office of the international law firm Hogan Lovells.

Before practicing law, Mr. Heynssens was an experienced electronic design engineer.  At Motorola, he designed cellular telephone base station equipment, and was an RF design task leader in the development of microwave, UHF and VHF radio transmitters and receivers for military applications.  While at Raytheon he designed circuits for communications equipment for the MILSTAR satellite communications program, and also designed high rate computer controlled test equipment for microwave and RF circuits.

Professional Experience


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Admitted to Practice

  • Washington
  • Arizona
  • California
  • Wyoming
  • District of Columbia

Professional Activities

  • U.S. Patent and Trademark Office (registration number 47,648)