Mayo Collaborative Services v. Prometheus Laboratories, Inc.

**What This Case Was About** Prometheus Laboratories held patents on methods for determining the right dosage of certain drugs by measuring chemical levels in patients' blood. Mayo Collaborative Services, a medical organization, used similar testing methods. Prometheus sued Mayo for patent infringement, claiming Mayo was using their patented process without permission. **What the Court Decided** The Supreme Court ruled against Prometheus and invalidated their patents. The Court found that Prometheus was trying to patent a basic law of nature - the relationship between drug dosages and the body's natural chemical responses. The Court said you cannot patent natural processes unless you add enough original, inventive steps beyond just observing how nature works. **Why This Matters for Workers** This ruling helps protect workers in healthcare and scientific fields from overly broad patent claims. It means companies cannot monopolize basic scientific knowledge or natural processes that workers need to do their jobs effectively. Healthcare workers, lab technicians, and researchers can continue using standard medical testing methods without fear of patent lawsuits over fundamental scientific principles. This promotes innovation and keeps essential medical tools accessible.