On October 12, 2017, the CNIPA issued No. 33397 invalidation decision, declaring that all rights of the invention patent, entitled "air conditioning system and control method for the same", which were owned by Gree Electric Appliances, Inc. were valid.

After accepting the client's entrustment, the team of Hengbo had done a lot of preparatory works, successfully pointing out the defects of evidence and the wrong understanding of technology of the other party. Finally, The CNIPA decided to maintain the validity of the patent rights.

According to the law, if the patentee disagrees with the invalidation decision, he or she can file an administrative litigation to the Beijing Intellectual Property Court within 3 months.