The Supreme Court of Canada holds Pfizer’s Viagra patent invalid *

Canada - April 22 2013
In a cautionary tale to be heeded by patent drafters, the Supreme Court of Canada held that Pfizer's patent directed to sildenafil, better known as…

The U.S. Prometheus decision and claims to methods of optimizing dosing regimens: Mayo Collaborative Services v. Prometheus Laboratories, Inc., U.S., No. 10-1150 *

Canada, USA - April 11 2012
In a decision last month, the U.S. Supreme Court in a 9-0 ruling has held that the method claims of two patents directed to optimizing the dose of a specific drug for treating an autoimmune disease are not patentable because they merely recite laws of nature.

Potential impact of the Amazon.com decision on inventions in the life sciences sector *

Canada - June 28 2011
The October 2010 Federal Court decision in Amazon.com v. The Commissioner of Patents (Amazon.com) may substantially broaden the range of subject matter for which patent protection is available in Canada.

Co-authors: Lee A. Johnson .