On May 27, 2015, the Board issued a final written decision in Organik Kimya AS v. Rohm & Hass Co., IPR2014-00185, confirming the patentability of all challenged claims of U.S. Patent No. 6,020,435.
The ‘435 patent is directed to a chemical process for preparing low-density “hollow” or “voided” multi-stage emulsion polymers used in coating compositions such as paints. These emulsion polymers are generally prepared by swelling a core/shell emulsion polymer in such a way that one or more voids form in the interior of the emulsion polymer particle.
Continue Reading PTAB Upholds Claims Directed to Chemical Process Based on Expert Testimony and Experimental Evidence
On May 26, 2015, the Board issued its final written decision in Schott Gemtron Corp. v. SSW, IPR2014-00367, confirming the patentability of all of the challenged claims of U.S. Patent No. 8,286,561 (“the ’561 patent”).¹ The Board concluded the prior art on which the petitioner, Schott Gemtron Corporation, relied was not analogous to the ’561 patent’s claimed invention and, more particularly, the art was not reasonably pertinent to all the problems the inventor faced.