The team at Unified IP Services is using Pearl to identify and chart prior art against U.S. Patent 10,404,366, U.S. Patent 10,623,095, U.S. Patent 10,924,188, and U.S. Patent 11,431,431 owned by Radiant Patents LLC (f/k/a PLS XLIV LLC), an NPE and entity of MVRE LLC. The patents relate to optical networking and have been asserted against Nokia.