An Oregon doctor filed a $5.25 million lawsuit Wednesday against a fertility clinic at the Oregon Health & Science University for being “incredibly irresponsible” with his sperm.

Dr. Bryce Cleary, 53, alleges that the OHSU clinic used his 1989 sperm donation to father at least 17 children—some who live in his area—despite him making an agreement with the clinic at the time that his sperm would be used for no more than five children, all born to women living out of the state.

Dr. Cleary, who lives in Corvallis, learned that at least two of his unexpected biological children conceived through the clinic have attended the same schools, as well as church and social activities, as some of the children he has with his wife—three sons and an adopted daughter.