U.S. Patent Trial and Appeal Board (PTAB)

The Patent Trial and Appeal Board invalidated all claims in two Trina Solar TOPCon solar cell patents, finding them obvious over prior art including a 2013 Fraunhofer Institute publication, in a pair of IPR proceedings brought by Canadian Solar and Runergy.

The U.S. Patent Trial and Appeal Board issued final written decisions invalidating all claims in two TOPCon solar cell technology patents asserted by Trina Solar against Canadian Solar subsidiaries, removing a key IP barrier in the competitive solar panel market.