1. As to the Defendant (Counterclaim Plaintiff) D, E, Plaintiff (Counterclaim Defendant) B, and Plaintiff C:

(a) Appendix 3, 4.

A principal lawsuit and counterclaim shall also be deemed a principal lawsuit and counterclaim.

1. Basic facts

A. The status of the parties 1) Plaintiff A is a company established for the purpose of manufacturing and selling boiler, etc. Plaintiff B is the representative director of Plaintiff B, and Plaintiff C is the vice president of the above A. 2) Defendant D is a company established for the purpose of manufacturing and selling the industrial boiler, etc. Defendant E is a company established for the purpose of manufacturing and selling the industrial boiler, etc., Defendant E was serving in A from January 14, 2013 to March 12, 2014, and was serving as the above Defendant D’s representative director from March 28, 2014 to July 14, 2015, and Defendant F is a company with the purpose of building business, sti production, manufacturing and selling business.

B. Plaintiffs B and C’s patent right (hereinafter “instant patent invention”) are patent holders as to the following patented inventions:

1) Date of application/registration number / : H/I/J 2: The main contents of the invention B/C are as shown in Schedule 1; 4) claims 1, 2, and 9 (hereinafter referred to as “claim 1, 2, and 9”) among claims filed by Plaintiffs B and C, hereinafter referred to as “ Claim 1”) 1 external frame (1) of metal materials connected to the other side / 11) of the first external framework (11) and 1 parts (12) of fireproof material, which is in the form of 2 in the form of 1 external frame (12) and 12 in the form of 12 in the first outer frame (13) and 12 in the body of body (12 in the body of the above 12 in the form of 12 in the front frame) and 12 in the body of the joint body (13) and 14 in the body of the joint body (2) above.