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Stephen Kunin

Partner, Maier & Maier PLLC

Mr. Kunin is a Partner at Maier & Maier PLLC, where he specializes in all areas of patent practice. His expertise includes post-issuance proceedings at the United States Patent Office, opinions of counsel, advising attorneys and our clients on complex patent prosecution matters, patent litigation strategy, and United States Patent Office patent policy, practice and procedure, for which he is highly sought after for expert testimony.

In addition to serving as an expert witness, Mr. Kunin has vast experience in providing lectures on recent US patent law developments across the USA, Europe and the Far East.  He has more than 48 years of experience in the patent profession.

After graduating from Washington University (MO) with a Bachelor’s in Science in Electrical Engineering with honors in 1970, Mr. Kunin embarked on his lengthy career over nearly 35 years at the United States Patent Office. He received his JD in law degree with honors in 1975 from The National Law Center at George Washington University. He held many significant positions with the USPTO, which culminated with ten years of service as the Deputy Commissioner for Patent Examination Policy from 1994-2004. While at the USPTO, he was a leading voice in forming patent policy, in revising examination guidelines on subject matter eligibility, utility, non-obviousness and written description, and in establishing reissue and reexamination procedures. Mr. Kunin spearheaded revisions to the Rules of Practice and Manual of Patent Examining Procedure, making key changes to chapters on ex parte reexamination, reissue, and inter partes reexamination.

Since leaving the PTO, Mr. Kunin has been a practicing patent attorney for more than 13 years counseling clients in post-grant patent proceedings at the USPTO and routinely serves as an expert witness in patent litigation cases. He is a registered patent attorney with the USPTO, and admitted to practice in the Commonwealth of Virginia, before the U.S. Court of Appeals for the Federal Circuit, and before the United States Supreme Court. From 2005 through 2017, Mr. Kunin served as the Intellectual Property Program Director at the Antonin Scalia School of Law at George Mason University, while teaching patent and intellectual property law classes as an adjunct professor of law.

Recent Articles by Stephen Kunin

In Memoriam: The Honorable Gerald J. Mossinghoff

It is with great sadness that I inform the intellectual property law community of the passing of the Honorable Gerald J. Mossinghoff on March 20, 2020.  He was 84 years old.  I knew Gerry for more than 37 years, first as a Patent Examining Group Director when he was the Commissioner of Patents and Trademarks in the Reagan Administration, then as a colleague at the Oblon firm, where I was a partner and he a Senior Counsel.  He was a cherished friend.  We will miss him dearly. Gerald J. Mossinghoff was born in St. Louis on September 30, 1935. He received a bachelor’s degree in electrical engineering from St. Louis University and a law degree from George Washington University. He worked four years as an examiner at the Patent Office, starting in 1957, before leaving to join a law firm. He returned to government service for a series of jobs including the post of director of legislative planning at the USPTO. Later, at the National Aeronautics and Space Administration, he rose to the position of deputy general counsel.

PTAB Administrative Trials: Where Are We Now?

While the PTAB statistics demonstrate the profound effect that the AIA trials have had on issued patents, it seems to have the greatest impact on non-manufacturing patent assertion entities (PAE). With the increased tendency of district courts showing a willingness to grant stays of the concurrent litigation, the AIA trials have become an effective weapon against PAE. However, nevertheless, it is not surprising that with any dynamic system we have seen a settling process where institution rates have been dropping and the information provided by the PTAB in its publication of informational and precedential decisions has served to provide clarity to those practicing before the PTAB in administrative trials.

Past Events with Stephen Kunin

IPWatchdog Patent Masters™ Symposium 2019 (In-Person)


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March 25, 2019 - March 26, 2019

Getting Past NO at the Patent Office

January 17, 2019 @ 12:00 pm - 1:00 pm EST