1. The decision made by the Intellectual Property Tribunal on June 16, 2017 on a case No. 2015Da3649 is revoked.

2. The costs of lawsuit shall be.

1. Presumed factual basis

A. 1) On July 29, 2003, the Plaintiff is a company established by C for the purpose of manufacturing semiconductor equipment and precision chemical parts, etc. on the part of July 29, 2003, and the Plaintiff’s business entity, who manufactures and sells rubber or ices, etc. inside the tank, pipes, etc. for the purpose of preventing erosion due to the use of drugs. The Plaintiff’s business entity, from October 26, 2007 to August 15, 2009, was in charge of the Plaintiff’s business entity from October 201, 201 to August 201, 201, who was in charge of the Plaintiff’s business entity, from October 20, 2009 to August 20, 2012, who was in charge of the Plaintiff’s business entity’s sales agent, from October 21, 2007 to August 20, 2017.

3) D and F were established for the purpose of manufacturing valves and pipes on January 20, 2012. D and F were in office as the representative director of the Defendant, and F were in office as the Defendant’s internal director. B. The names of the instant patented invention (A. 2 and 3 Evidence 1): H are generally used in opening and closing the transfer flow of fluids, and see the Bota-in disc is installed in a basin so that they can be opened or closed, or changing the direction of transfer of fluids (Ga evidence 2, door number / [002] 2): Date of application/registration number : I/J/K 3) / Defendant 4 / Claim 1 metal material of metal material, D/ Defendant 4 / The shape of the instant patented invention is formed for the purpose of combining the outer surface of the body with the outer surface of the Gu, and the shape of the joint valve is formed for the purpose of combining the outer surface of the body and the joint valve operation.