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

Profits From Ohrbach Estate: Los Angeles dentist Gary Milan has sued Sotheby’s auction house in New York on grounds that it breached an agreement to share profits with him from items auctioned from the estate of Jerome Ohrbach of Ohrbach’s department stores. The Los Angeles federal court suit said Sotheby’s agreed in October, 1973, to give Milan a 20% commission on sales of property from the estate in return for helping Sotheby’s obtain the account. The suit said Sotheby’s repudiated the agreement in September, 1990. (Case No. 90- 6907. Filed Dec. 26, 1990.)