Altair Engineering, parent company of LED lighting developer ilumisys, has been granted a judgment and permanent injunction against High Tech Global Group Co., Ltd. (HTGG), a Taiwanese manufacturer. Altair brought action against the company when it discovered HTGG was infringing upon Altair's patent for LED-driven replacement lighting for fluorescent lamps.

In an order handed down February 29, Judge Denise Page Hood in the U.S. District Court, Eastern District of Michigan (Southern Division) ruled HTGG infringed upon Altair's patent for LED lighting and granted the company's motion to permanently enjoin HTGG and its distributors from "marketing, advertising, publicly displaying, offering to sell, selling, using, and/or manufacturing in the United States, or importing into the United States, its current product-line of LED powered replacement light tubes to be used with fluorescent lighting fixtures." Judge Hood also granted Altair's request to retain jurisdiction over the case.