Law Commons^™

Proving Copying, Shyamkrishna Balganesh, Peter S. Menell

William & Mary Law Review

Proof that a defendant actually copied from a copyrighted work is a critical part of a claim for copyright infringement. Indeed, absent such copying, there is no infringement. The most common method of proving copying involves the use of circumstantial evidence, consisting of proof that a defendant had “access” to the protected work, and a showing of “similarities” between the copy and the protected work. In inferring copying from the combination of such evidence, courts have for many decades developed a framework known as the “inverse ratio rule,” which allows them to modulate the level of proof needed on access …

Withholding Injunctions In Copyright Cases: Impacts Of Ebay, Pamela Samuelson

William & Mary Law Review

Before the Supreme Court’s 2006 decision in eBay Inc. v. MercExchange, L.L.C., which ruled that courts should exercise equitable discretion when considering whether to issue permanent injunctions in patent infringement cases, courts routinely granted injunctions in copyright cases when plaintiffs proved that defendants had infringed or had likely infringed copyrights. Such findings triggered presumptions of irreparable harm, which were almost never rebutted. Only rarely would courts consider a balancing of hardships or effects of injunctions on public interests.

In the first several years after eBay, commentators reported that eBay had had little impact on the availability of injunctive …