Tag Archives: Expert Testimony

Claims Found Obvious Even Though Petitioner Waited Until Reply to Present Expert Testimony

By Marshall Gerstein on Posted in Inter Partes Review
It’s well understood that waiting until reply to present any expert testimony comes with a risk that the testimony will be excluded. But that’s not what happened in a recent IPR, where a petitioner waited until reply to present such testimony, and the PTAB, in view of the straightforward nature of the technology, found the … Continue Reading

PTAB Upholds Claims Directed to Chemical Process Based on Expert Testimony and Experimental Evidence

By Michael R. Weiner on Posted in Inter Partes Review
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 … Continue Reading
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