A split panel of the Federal Circuit held that the PTAB applied a standard that was too exacting when it required an inventor to prove the “continuous exercise of reasonable diligence” to antedate a prior art reference. Rather, the PTAB should have applied the rule of reason to determine if the inventor proved that there was “reasonably continuous diligence.” Perfect Surgical Techniques v. Olympus America, Inc., Case No. 2015-2043, __ F.3d __ (Fed. Cir. Nov. 15, 2016). This clarified standard appears to ease the burden on a party seeking to prove diligence.
Continue Reading To Antedate, Must an Inventor Prove “Continuous Reasonable Diligence” or “Reasonably Continuous Diligence”?
In a recent order by the magistrate judge in 
Recently, the PTAB excluded Patent Owner expert witness testimony because during the expert’s deposition, on redirect, Patent Owner’s counsel asked leading questions. IPR2014-01146, Paper 36, pg. 6. The PTAB relied on Federal Rule of Evidence 611(c), and cited to McCormick on Evidence, § 6 (7th ed. 2013), which states “[a] leading question is one that suggests to the witness the answer desired by the examiner.” Is the PTAB, in reading a cold record and applying an unforgiving reading of the rule, setting a dangerous precedent on admissible testimony?
Two recent PTAB final written decisions illustrate the difficulty in convincing the PTAB to grant a motion to exclude evidence, in particular on the grounds of relevance, more particularly for evidence submitted in support of a party’s claim construction position.