The Supreme Court ruled 6-3 in a highly technical decision this morning that the often-reversed 9th Circuit Court of Appeals was wrong to invalidate a copyright infringement verdict that a clothing designer won against fashion retailer H&M. The appeal came after Vernon, California-based Unicolors won a nearly $800,000 award at the trial court-level against Sweden-based H&M for copying its fabric designs. The majority opinion (pdf) in Unicolors Inc. v. H&M Hennes and Mauritz LP, court file 20-915,  written by Justice Stephen Breyer, held that a copyright registration cannot be challenged because it contains inadvertent legal errors. Justices Clarence Thomas, Samuel Alito, and Neil Gorsuch dissented from the Supreme Court’s opinion. Unicolors owns copyrights in many fabric designs. It sued H&M for copyright infringement and a jury ruled in favor of Unicolors, but H&M asked the judge after the trial to ignore the jury’s verdict, arguing the law required it to …