Our Team

Ehrlich & Fenster Patent and Trademark Attorneys (E&F) has long been the destination of choice for innovative and ambitious clients seeking unparalleled expertise in intellectual property protection and prosecution. Ehrlich & Fenster (E&F) offers services of filing and prosecution of Patents in all areas of science and technology.

Dr. David Mencher

Full Name: Dr. David Mencher

Title: Patent Attorney, Biotechnology/Life Sciences

Email: david@ipatent.co.il



Since joining EHRLICH GROUP in 2000, Dr. Mencher has drafted and successfully prosecuted hundreds of patent applications in all aspects of the field of Life Sciences: Biotech, Immunology, Biochemistry, Medical Sciences, Agrotechnology, Plant Breeding and more. Dr. Mencher has also advised and accompanied IP strategizing for client organizations throughout their development from invention to product and beyond.


  • Drafting and Prosecuting Patent Applications

  • IP Strategizing and Management



  • 1990-1994 Doctor of Chiropractic, Univ. of Western States, Portland OR, USA

  • 1975-1982 PhD and MSc Biochemistry/Molecular Biology, Department of Biochemistry, Hadasa-HUJI Medical School, Jerusalem

  • 1971-1973 BSc Biology, Faculty of Life Sciences, HUJI, Jerusalem

  • 1964-1968 BA Biology/Sociology, Hunter (Lehman) College, New York, NY

Ask me about

  • Biochemistry/Molecular Biology

  • Biology

  • Medical Sciences

  • Plant Biotechnology

  • Stem Cells/Immunology

Community (Volunteer work) 

  • Informal Biology/Chemistry Instruction

  • Guest Lecturer and Mentor (IP) Faculty of Biotechnology & Food Engineering- Graduate Students , Technion, Haifa.