Supreme Court Decision Syllabus (scotus)

Warner Chappell Music v. NealyUnder the Copyright Act, a plaintiff must file suit “within three years after the claim accrued.” 17 U. S. C. §507(b). On one understanding of that limitations provision, a copyright claim “accrue[s]” when “an infringing act occurs.” Petrella v. Metro-Goldwyn-Mayer, Inc., 572 U. S. 663, 670. But under an alternative view, the so-called discovery rule, a claim accrues when “the plaintiff discovers, or with due diligence should have discovered,” the infringing act. Ibid., n. 4. That rule enables a diligent plaintiff to raise claims about even very old infringements if he discovered them within the three years prior to suit. In this case, respondent Sherman Nealy invoked the discovery rule to sue Warner Chappell Music for copyright infringements going back ten years. Nealy argued that his claims were timely because he first learned of the infringing conduct less than three years before he sued. In the District Court, Warner Chappell accepted that the discovery rule governed the time