The request for invalidation case involved the utility model patent No. 201220262213.8 named "A Transformer Thick Corrugated Cardboard Pressing Mold", which was announced and granted by State Intellectual Property Office on January 2, 2013. Its filing date is June 5, 2012 and patent owner is Taizhou Xinyuan Electrical Equipment Co., Ltd..

Our company accepted the commission of invalid request people of Taizhou Weidmann High Voltage Insulation Co. ,Ltd.. The patent attorneys in Janlea made invalid retrieval. After search and browse for one hundred of literature, the patent attorneys selected the fours approximate patent technical literatures as invalid evidence and requested to declare that the patent does not have inventive step as regulated in Article 22.3 of the Chinese Patent Law.

The patent attorneys carried out a detailed study on the patent concerned and the prior art technique divisional in the invalid facts and reasons, decomposed the technical solution into various technical features and made a detailed comparison for the technical characteristics.

Since the fully preparation of the material of invalidation request and reasoned oral proceedings, Patent Reexamination Board accepted the views of request invalidation, made a " Examination Decision on Request for Invalidation " on January 3, 2014, and declared the patent right invalid in whole.