Maier Fenster


Practice areas


Head of Medical Devices Department

M.Sc. Comp. Sci., B.Sc. Mathematics & Physics
Lead Patent Attorney

Experience & Background

Maier leads the activity of the Medical Devices department, which focuses on drafting and prosecuting Bioengineering, Medical Devices and Medical Imaging patent applications.


Mr. Fenster specializes in groundbreaking and interdisciplinary inventions, as well as in helping build IP portfolios that add value to companies, especially start-up companies in the fields of Image Processing, Physics, Electronic Systems, Computer Science, Internet and Bioinformatics.


Mr. Fenster was involved in drafting and prosecution of thousands of patent applications and in oppositions and litigation support worldwide.

He was also involved in drafting patentability opinions, freedom to operate opinions and infringement opinions.

Mr. Fenster is an inventor in about 30 patent applications in the fields of software and medical devices (mechanics and electronics).

Mr. Fenster lectures in academic and professional forums and was a mentor in Talpiyot courses and involved in the selection of students for the Talpiyot Program.


In 1997, Mr. Fenster co-founded the firm of Fenster & Company, later to merge in 2006 with the practice of Ehrlich & Partners, becoming Ehrlich & Fenster, Israel’s largest & leading Patent Attorneys firm.

1994 – Mr. Fenster joined the practice of Sanford T. Colb & Co. as a Patent Attorney trainee.


1989 – B.Sc. (Honors) degree in Mathematics & Physics from the Hebrew University of Jerusalem (Talpiyot Program), Israel

1994 – M.Sc. degree in Computer Science from Bar-Ilan University, Ramat-Gan, Israel


Rankings & Recognitions

IAM Patent 1000 2018– Ranked Maier as one of the world’s leading patent professionals, describing him as “ challenges you not to think conventionally. He’s a super-smart guy who asks tough questions that put you to the test. He’s certainly one of the most knowledgeable and innovative practitioners around. Having looked at an issue, he will identify the key strengths and weaknesses of a position within minutes, and then formulate a sound strategy on that basis.”

Chambers and Partners Global 2018 Edition ranked Maier as a notable practitioner for the 9th consecutive year and described him as ” known for his patent expertise, particularly regarding the drafting and prosecution of medical device applications. Peers remark that he is “a brilliant lawyer who understands patents very well and is very good technically.”


1997 – Mr. Fenster was licensed to practice before the Israel Patent Office as a Patent Attorney and as a Patent Agent at the US Patent & Trademark Office.