Genericide—when a brand name becomes so common it loses trademark protection—is reshaping how companies defend their intellectual property globally. Recent court cases from Brazil to Japan show the tension between ubiquitous brand success and legal ownership, with some businesses fighting to stay proprietary while others embrace becoming the everyday word.
·Japan's famous brand names have entered common speech, risking loss of exclusive trademark status
·Renault's INSULFILM trademark lost protection in Brazil after courts ruled the term became generic through widespread use
·Spain's Donut case and Portuguese approach show different legal standards for when lexicalization triggers genericide
·Dryrobe and other brands actively fighting genericide claims to maintain trademark control
·Some small businesses view genericide as validation rather than threat, celebrating when their names become household words
drawn from Unseen Japan, World Trademark Review, Lewis Silkin, Managing Intellectual Property · updated 4d ago