1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. On December 23, 2016, the Plaintiffs filed a petition for a trial for invalidation of the registration with the Intellectual Property Tribunal against the Defendants on December 23, 2016, and “the Prior Inventions 1 (hereinafter referred to as “instant Claim 1,” and the remainder of claims are also identical in the same manner) submitted by the Plaintiffs at the trial stage are Article 20-2010-8985 (Evidence 4) of the Official Patent Gazette in Korea, Article 2010/21205 (Evidence 5) of the Official Patent Gazette in Korea, and Article 10-2010-82682 (Evidence 6) of the Official Patent Gazette in Korea (Evidence 6). The Plaintiffs asserted that the prior inventions submitted at the trial stage at the first trial date for the instant Claim 1 (hereinafter referred to as “the Prior Inventions 201”) were not denied by the Intellectual Property Tribunal’s ordinary knowledge 10 (Evidence 30).

B. The name of the patented invention (A) 1: C2) filing date/registration date/registration number: D/ E//Patent F3: the Defendants’ 4) claims are comprised of the parts of the concluding body (10) having the upper half of the upper half of the upper half of the claim (11) and the parts of the concluding body (12) having the open inside space (12) and the part (10) having the upper half of the conclusion body (10) above; each of the parts (20) taken place from the lower side of the above concluding body (10) (hereinafter referred to as “part 2”); and the part (11) of the Pakistan branch (1) above, the “inward” out of the outside is obvious of the entry.