D&G Law

OSB Antitrust Litigation

A federal court has denied the defendants’ motions to dismiss a class action lawsuit that Donaldson/GUIN filed against Louisiana-Pacific, Weyerhaeuser and other manufacturers of Oriented Stand Board (OSB), In re OSB Antitrust Litigation, 06-CV-00826 (E.D. Pa.).  OSB is a plywood substitute manufactured by compressing multiple layers of thin wood shavings under intense heat and pressure. Our lawsuit alleges that during a time of increased demand for OSB, the manufacturers conspired to reduce OSB production, which caused the price of OSB to dramatically increase from 10-year lows at the end of 2002 to record highs by October of 2003.