On April 9, 2012, The Fed. Cir. affirmed a holding by the district court that rendered two (then) Sanofi add-on patents on infusion vehicles for docetaxel unenforceable due to inequitable conduct. The inventors, particularly inventor/project manager Fabre, were found to have intentionally decided not to submit two material pieces of prior art to the PTO.
“Materiality” was not an issue on appeal, since the district court had invalidated the patents using the disclosures of the uncited references. Since the references were material under the “clear and convincing standard”, they had to be material under the PTO’s lower “preponderance of the evidence” standard.
The section on intent is more interesting. The references were not “knock-out” s. 102(b) disclosures of the invention, but rather were used to support invalidation based on s. 103. This left the contemporary relevance of the reference open to some debate, and both the district court and the Fed. Cir. relied heavily on the testimony of inventor Fabre who, unfortunately, testified in detail about his reasons for not submitting the references.






