The case centers on the "Martin" reference, a patent application covering LED technology that was filed on April 16, 2003 and published on October 21, 2004. Martin was later abandoned and never became a patent. Lynk Labs' '400 patent claims a priority date of February 25, 2004, placing it squarely in the gap between Martin's filing and publication dates. Samsung successfully used Martin to challenge claims of the '400 patent as obvious in IPR.
The enormity of the problem cannot be understated. A Federal Circuit panel recently reached a final decision that, if not overturned, will destroy the U.S. patent system, and will ironically impact the most valuable patents disproportionately. The ruling was simple and continues a disturbing and inexplicable trend-a patent issued after more than six years in prosecution is presumed unenforceable as the result of prosecution laches.
This week on IPWatchdog Unleashed, I speak with Todd Walters, who is Chair of the Patent Office Litigation practice group at Buchanan. We explore the current state of Patent Trial and Appeal Board (PTAB) practice and the growing tension among stakeholders as policy changes continue to reshape post-grant proceedings. We reflect on the intensity of opinion from patent owners and petitioners and discuss the high financial stakes and strategic importance of America Invents Act (AIA) proceedings.