Blog Big Molecule Watch May 23, 2017

Pfizer Files Two Petitions for IPR of Chugai Pharmaceutical’s Protein Purification Patents

Pfizer, Inc. has filed two petitions for IPR of Chugai Pharmaceutical’s patents:  IPR2017-01357 on U.S. Patent 7,332,289 and IPR2017-01358 on U.S. Patent 7,927,815.  According to the petitions, both patents are directed to methods for purifying antibodies.  The petitions do not identify a particular product that may use the patented methods.