Earlier, the microelectronics complaint claimed that Intel Core series processors had infringed its FinFET patent entitled "semiconductor device structure and fabrication method, and semiconductor fin manufacturing method", requiring Intel to stop the infringement, compensate at least 200 million yuan, bear the litigation costs, and apply to the court for an injunction.

According to the Patent Reexamination Board of the State Intellectual Property Office, it heard the invalid application for the invention patent of 201110240931.5 ("FinFET patent"). The applicant of the invalid application is Intel (China) Co., Ltd., and the patentee is the Institute of microelectronics, Chinese Academy of Sciences (hereinafter referred to as "Institute of microelectronics").

It is reported that this is a measure taken by Intel in response to the patent infringement lawsuit initiated by the Microelectronics Institute in 2018. Prior to this, Intel had filed five invalid applications for patents involved in the case and its US family patents in China and the United States, and all of them ended in failure.

Earlier, the microelectronics complaint claimed that Intel Core series processors had infringed its FinFET patent entitled "semiconductor device structure and fabrication method, and semiconductor fin manufacturing method", requiring Intel to stop the infringement, compensate at least 200 million yuan, bear the litigation costs, and apply to the court for an injunction.

The FinFET patent involved in the case is an invention patent related to FinFET process, and the patent strength of the Institute of microelectronics is very strong in the field of FinFET. According to the patent survey of FinFET conducted by foreign patent consulting company lexinnova in 2015, the number of patent applications of Institute of microelectronics of Chinese Academy of Sciences ranked 11th in this field, and the quality of patent application was evaluated as the first in the world.

The public information shows that the number and quality of the patents of the Institute are very considerable. Up to now, the Institute of microelectronics has submitted more than 5000 Chinese patent applications, more than 500 foreign patent applications, 158 transferred patents and 1505 patent licenses in the fields of integrated circuits, highly reliable devices and circuits, and the Internet of things. At the same time, the Microelectronics Institute does not lack the experience of "patent war" with international large enterprises. In May 2017, the Chinese Academy of Sciences launched a patent infringement lawsuit against the US LED manufacturer Cree and its domestic subsidiaries in Shenzhen and Guangzhou.

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