Sumio Tanai


Patent Attorney

Practice Area
Technical Field

Chemistry, Biotechnology, Pharmaceuticals

Mr. Tanai specializes in organic chemistry, organic synthesis, pharmaceuticals, pharmaceutical manufacturing, cosmetics, cleansing agents, high polymer chemistry, catalysts, resists, genetic engineering, protein engineering, biotechnology, and foods. He regularly presents lectures on patent issues in Japan.


Prosecution, opinions, oppositions, and trials for invalidation


B.S., School of Agricultural Chemistry, The University of Tokyo

Professional Background

Morinaga Milk Industry Co., Ltd.; Private patent firm