A. The Plaintiff is an insurer of the health insurance that provides insurance benefits under the National Health Insurance Act, and Defendant Dongdong Fire & Marine Insurance Co., Ltd. is an insurer who has concluded a specialized liability insurance contract with Defendant A, and Defendant A is the B medical care source user.

(b) C suffering from dementia is a person of long-term care Grade 3, who falls under the category of long-term care, and was injured by themselves from the windows installed at the end of the third floor corridor located at the end of the third floor of the medical care center located at the eternic Mad on August 13, 2013.

(hereinafter referred to as “instant accident”). C.

C due to the instant accident, C received each medical treatment at Aju University Hospital and E General Hospital, and C paid KRW 4 million out of the above medical treatment costs, and the Plaintiff paid KRW 25,183,910 of the above medical treatment costs ( KRW 22,291,870 on October 24, 2013, KRW 254, KRW 120 on November 20, 2013, KRW 637,920 on February 24, 2015) as insurance benefits.

[Ground of recognition] A without dispute, entry of Gap evidence Nos. 1 through 10, the result of the request for appraisal of medical records to the Korean Medical Association, the purport of the whole pleadings

2. Determination

A. According to the facts acknowledged prior to the acquisition of the insurer's right of subrogation, B medical care center is established to promote the improvement of the old age and the stabilization of livelihood for the elderly who have difficulties in daily life on their own by themselves due to a scarcity disease, etc., as in C, and C seems to have deteriorated the recognition function due to the depression, dementia symptoms, etc. at the time of the instant accident as in the 3rd class of long-term care class, and the medical care center of B medical care center was negligent in neglecting its progress observation while being aware of the symptoms of C, and in failing to take appropriate protective measures to prevent escape, etc., and thus, the accident of this case can be seen as the occurrence of the accident of this case. Thus, the Defendant Dong East Marine Insurance Co., Ltd., which concluded the liability insurance contract with Defendant A and Defendant A, a medical care center, as the employer of B medical care center, shall jointly and severally