返回判决日期2011年7月18日颁布当局联邦上诉法院颁布当局的级别上诉审程序类型司法(民事)主题专利(发明)原告/上诉人Weatherford Canada Ltd., Weatherford Canada Partnership, Edward Grenke, and GrenCo Industries Ltd.被告/被上诉人Corlac Inc., National-Oilwell Canada Ltd., and National Oilwell Incorporated关键词
Prior use,
Induced infringement,
Defences to infringement,
Anticipation (Novelty),
Oil and gas,
Mechanical