https://www.reuters.com/article/us-sk-innovation-lg-chem-lawsuit/south-koreas-sk-innovation-to-file-patent-infringement-lawsuit-against-lg-chem-in-u-s-idUSKCN1VK034 >South Korean battery maker SK Innovation Co Ltd on Friday said it plans to sue compatriot LG Chem Ltd and its U.S. subsidiary in the United States over alleged patent infringement related to electric vehicle (EV) batteries.