In this index, 26 federal civil lawsuits name a party recorded as Ansys, Inc, most often as a plaintiff (16 of 26). These may be different parties who share the name; records here are grouped by name only. These cases are most often Copyright and Contract matters, filed between 1995 and 2026, most frequently in District Court, W.D. Pennsylvania. The most common causes of action are Copyright Infringement, Patent Infringement, and Breach of Contract. Frequent opposing parties include Does 1 Through 323, Collaborative Solut, and Anker-Zemer Engineer.