Williamson v. Genentech, Inc.Annotate this Case
Genentech manufactures and sells Rituxan, a drug used to treat leukemia and lymphoma. Rituxan is sold in single-use vials. Williamson was diagnosed with follicular lymphoma and was treated with Rituxan. Williamson later sued Genentech, on behalf of himself and a putative class of similarly situated individuals. He claims that Genentech violates the unfair competition law by selling Rituxan (and three other medications) in excessively large single-use vials; because the appropriate dosage varies based on a patient’s body size, Genentech’s vial sizes are too large for most patients. He argues Genentech should be required to offer smaller vials to reduce the waste of expensive medicine. In addition to injunctive relief, Williamson seeks to recover the amount the class spent on wasted Rituxan (and three other medications). Williamson took only Rituxan, not the other three medications, and paid a $231.15 deductible– the rest of the payments were made by his health insurer.
The court of appeal affirmed the dismissal of the case for lack of standing under California’s unfair competition law (Bus. & Prof. Code, § 17200 et seq.). Williamson suffered no economic injury caused by the alleged unfair practices and cannot establish standing by borrowing an economic injury from his insurer. The collateral source rule, under which a tortfeasor must fully compensate a victim and cannot subtract compensation the victim may have received from their insurer or another collateral source, does not apply.