Intellectual Property Law Commons^™

Proving Copying, Shyamkrishna Balganesh, Peter S. Menell

Faculty Scholarship

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 …

Inducers And Authorisers: A Comparison Of The Us Supreme Court's Grokster Decision And The Australian Federal Court's Kazaa Ruling, Jane C. Ginsburg, Sam Ricketson

Faculty Scholarship

On June 27, 2005, the US Supreme Court announced its much-awaited decision in MGM Studios, Inc. v. Grokster Ltd. A few months after this, the Federal Court of Australia handed down its decision at first instance in relation to parallel litigation in that country concerning the KaZaa file sharing system. Both decisions repay careful consideration of the way in which the respective courts have addressed the relationship between the protection of authors' rights and the advent of new technologies, particularly in relation to peer-to-peer networks.

In the Grokster case, songwriters, record producers and motion picture producers alleged that two popular …