1. 5 - Wenzel Downhole Tools Ltd. v. National-Oilwell Canada Ltd., 2012 FCA 333 (CanLII). Wenzel was an inventor who had patented and produced a tool containing bearings that could better handle the download in well-drilling operations. National-Oilwell manufactured an identical product, and Wenzel sued for patent infringement. Explain the appropriate remedies available to Wenzel. How would it affect your answer to know that Wenzel manufactured a tool sold to the industry that contained the bearing at the time of the patent application? Note as well that National-Oilwell also claimed that the development of the bearings was an obvious development to anyone in the industry.