Feb 8 (Reuters) - Shionogi & Co Ltd
* Says it announced that ViiV Healthcare, the global specialist HIV company majority-owned by GSK, with Pfizer Inc. and Shionogi Limited as shareholders, has filed patent infringement litigation against Gilead Sciences Inc. over bictegravir in the United States and Canada
* The United States case is filed in the U.S. District Court for the District of Delaware and the patent is U.S patent No. 8,129,385
* The Canadian case is filed in the Canadian Federal Court in Toronto and the patent is Canadian Patent No. 2,606,282.
Source text in Japanese:goo.gl/A6JmYz
Further company coverage: (Beijing Headline News)