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

Fox, 20th Century Sued Over ‘Open House’: A Toluca Lake Realtor and screenwriter sued Fox Broadcasting and 20th Century Fox in Los Angeles Superior Court, asserting that he originated the concept for the TV series “Open House.” Joseph Brazen’s suit claims that in April, 1989, he pitched the idea for the series to Fox, which rejected it. Brazen seeks at least $600,000 plus punitive damages. A spokesman for the defendants declined comment, but the suit says Fox has denied that the show was based on Brazen’s work. (Filed April 11, 1990. Case No. C758017)