The Carnegie Institution of Washington, which has been doing scientific research for more than a century, filed lawsuits in New York alleging its patents for growing diamonds in a lab are being infringed by some top makers of such gem stones.
The institute filed three complaints Thursday in Manhattan federal court against six companies, including Pure Grown Diamonds and IIa Technologies. Carnegie and M7D, which licenses the technology, said in the lawsuits that they are seeking cash compensation and court orders blocking unauthorized use of two patents.