A summary of Southern California-related business litigation developments during the past week.

Motion Picture Assn. Sues Rap Group: The New York-based Motion Picture Assn. of America Inc. sued Quality Records Inc., a Beverly Hills record company, and rap musicians PG-13, alleging unfair competition and infringement of its movie ratings trademark. The federal court suit contends that the group and its album, “Rolling with the PG,” distributed by QRI, violated the Trademark Act of 1946. The MPAA says in its suit that unauthorized use of their certification will dilute the meaning of it and alleged that the rap group intentionally used the trademark to mislead the public into believing they are sponsored by the association. The MPAA asks that the group be barred from using the PG-13 designation in its name and that it turn over all profits made while using it. (Case No. 90-5675. Filed October 23.)