1. The plaintiff's claim is dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

1. Case summary

A. On June 26, 2015, the Defendant’s title against the Plaintiff on June 26, 2015 (the filing date/registration date/registration number/ patentee: December 13, 2003/ June 2/ 2008/ the Plaintiff) (hereinafter “instant patented invention”).

(2) On October 21, 2015, the Plaintiff filed a request for correction on October 21, 2015.

3) On November 23, 2015, the Intellectual Property Trial and Appeal Board recognized the correction of the Plaintiff’s request for correction, dismissed the request for a trial on the claims 3 of the instant patent invention, and invalidated the claims claims 2, 4 through 13, and 15 (hereinafter “instant trial decision”).

B. B. B. The claims of the instant patent invention (amended by Act No. 1015, Oct. 21, 2015) were deleted 1. 【Claim 2】 【The deletion Claim 2】 【C:05 through 0.7%, Si:05 through 1%, Mn: 0.05 through 3%, Mn: 0.5 through 3%, P: 0.1%, S: below 0.1%, and Al: below 0.2% (hereinafter referred to as “content 2-1”).

) In addition, Ti: 0.01 to 0.8%, Cr: 3% or less, Mo: 1% or less of the sources selected to satisfy the following chemical formula 1, and a steel board consisting of Fe and other inevitable distressed materials (hereinafter referred to as “class 2-2”).

(i) contain Cr and Mn with a total of more than 0.1 per cent (0.1 per cent) on the surface of the earth and consisting of Fe, Al and other inevitable net (hereinafter referred to as “entent 2-3”).

) up to the surface of the Fe-Al System (hereinafter referred to as “entent 2-4”).

(2) 【The claim(2) 【The Claim(3) 【The Claim(s) 1 【The Claim(s) 1 % more than 0.1% as a whole on the surface of the Claim(s) 4 【The Claim(s) 1 / 10% more than 0.1% more than 0.1% more than 0.1% as a whole on the surface of the Claim(s) 4.