Ken Fagin appreciates the fact that it is the innovators, inventors, and entrepreneurs who fuel the world’s economies, and the whole objective of a patent system is to protect the fruits of their mental efforts.  As a registered patent attorney, it is Mr. Fagin’s goal to serve his clients in protecting what their companies have worked so hard to develop.

In serving his clients, Mr. Fagin brings to bear a solid blend of deep technical understanding, tenacious advocacy, and joy taken in clear writing.  He also prides himself on working to secure allowance at the examiner level with a minimum number of resubmissions (RCEs) and without resort to the appeals process if at all possible.

Since beginning has patent career in 1992, Mr. Fagin has worked with a vast array of mechanical, electro-mechanical, and electrical engineering technologies.  In 2011, he was named to PatentBuddy’s® national list of top patent prosecutors.  Prior to attending law school at Washington University in St. Louis (J.D. 1992), Mr. Fagin worked as an engineer at McDonnell Douglas Aircraft Company.  He received a B.S. in Aerospace Engineering from the Massachusetts Institute of Technology in 1987.

Representative Experience

  • Serve as one of a select few remaining U.S. counsel handling prosecution on behalf of a major Japanese gaming machine manufacturer, having consolidated prosecution previously handled by multiple firms/practitioners.  Significantly increased rate of allowance – including several cases over subject-matter eligibility rejections – while decreasing overall costs by bringing prosecution to successful conclusion without resort to the appeals process.
  • Developed the entire patent portfolios for a number of burgeoning companies, including a company focused on desalination and other alternate sources of drinking water. Representation for the life of the company has provided intimate familiarity with the company’s various patent assets and facilitates quick advice on a moment’s notice.
  • Prepared a number of foundational patents for a sports technology start-up company directed to wireless devices and networked computer systems for automatically tracking and displaying in real time the movements and locations of players and objects such as basketballs during games of sport, as well as made and missed shots on goal. 


Washington University School of Law, J.D.

Massachusetts Institute of Technology, Aerospace Engineering, B.S. 

Previous Experience

  • Novak, Druce + Quigg, Partner
  • Pillsbury Winthrop, Senior Associate

Areas of Practice


  • District of Columbia
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the District of Massachusetts
  • U.S. Patent and Trademark Office

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