The Federal Circuit issued its opinion in Classen Immunotherapies, Inc. v. Biogen Idec, 2011 U.S. App. Lexis 18126, on August 31, 2011. As part of that decision it held that the safe-harbor provision of the Hatch-Waxman Act is limited to activities reasonably related to obtaining pre-marketing FDA approval of generic counterparts, and does not protect post-approval research activities.

Two of Classen’s patents are broadly directed to comparing the effectiveness of immunization schedules with regard to risk of developing chronic immune-mediated disorders (e.g., diabetes, asthma, cancer), and then immunizing according to the lower risk schedule.