In Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co. LTD., 2016-2321 (Fed. Cir. August 22, 2017)(designated precedential), the Federal Circuit upheld the PTAB’s finding that a patent directed to an HVAC system was invalid.  However, a concurring opinion criticized the PTAB’s joinder practice and use of expanded panels, indicating that such practices are likely…