珠海格力电器股份有限公司(下称格力)于2006年9月11日提出了名为“可拆装式空调室内机管路安装挡板”的实用新型专利申请,于2007年9月12日得到授权(下称挡板专利)。2012年,格力以广东美的裂冷设备有限公司(下称美的)侵犯挡板专利权为由,向珠海中院提起诉论。美的当然不甘束手就擒,向复审委提出无效宣告请求。2013年5月,复审委做出第20624号无效决定,维持挡板专利有效。美的以无效程序 On September 11, 2006, Zhuhai Gree Electric Appliance Co., Ltd. (hereinafter referred to as Gree) proposed a utility model patent titled “Removable Air Conditioning Indoor Unit Pipe Mounting Baffle”, and on September 12, 2007, Day authorized (hereinafter referred to as the bezel patent). In 2012, Gree filed a lawsuit with Zhuhai Intermediate Court on the ground that Guangdong Midea Fissure Equipment Co., Ltd. (Midea) infringed its patent on the bezel. Of course, the United States is unwilling to let go and submit an invalid declaration request to the reviewing board. In May 2013, the REIA made an invalid decision No. 20624 to maintain the validity of the barrier patent. The United States to invalid procedures