A Delaware judge has scheduled Oct. 19-25...

A Delaware judge has scheduled Oct. 19-25 for hearings on a challenge to a Polaroid Corp. stock plan designed to impede a hostile takeover of the instant photography pioneer. Shamrock Holdings Inc., a California investment firm owned by the Roy E. Disney family, claimed in a lawsuit filed in July that Polaroid intentionally increased an employee stock ownership plan to prevent an acquisition. Polaroid officially is incorporated as a Delaware company, though it is based in Cambridge, Mass. Polaroid on Aug. 16 rejected a sweetened takeover proposal from Shamrock of $40 a share and 40% of any settlement in Polaroid’s $5.7-billion patent infringement case against Eastman Kodak Co.