1. The decision made by the Intellectual Property Tribunal on November 20, 2015 on the case No. 2015DaDa209 is revoked.

2. The costs of lawsuit shall be.

1. Case history

A. The title of the invention 1) invention of this case: The sewage culvert 2) is to collect sewage of a certain volume at the ordinary level or in Docheon City and discharge it to a sewage terminal treatment plant. The filing date/registration date/registration number: the patentee of Jan. 15, 2005 / November 14, 2006 / the claims: Plaintiff 4) claims 1 through 8 / 9 / 9 / 9 / 200 / 200 / 4 2000 / 2000 / 400 2000 / 4200 2000 / 2000 ,000 ,000 ,000 ,000 - 20 ,000 - ,000 - 20 - ,000 - ,00 ,00 - 20 - ,00 - 20 - 3 20 - - 200 .

All the expressions contained in the Plateral Law are the same.

(5)There is equipped (hereinafter referred to as "class 3"); At least one horizontal maintenance stores (6) which regulates the power to close each circuit line (4) above (hereinafter referred to as "class 4"); each line line opening and closing (4) above is equipped (hereinafter referred to as "class 5"); and one or more later series of earth and sand flow prevention devices (hereinafter referred to as "paragraph 9 of this case") with characteristics of the lower part of each line line opening and closing (7) above (hereinafter referred to as "class 5"); and the remainder of claims in the same way as the other claims) in Section 9 of the Claim 10.