Law Firms Sued for Letting Diamond Patent Lapse

This comes from “the dog ate my homework” department.

GemEx, the makers of a device that measures the light-performance quality of gemstones have sued their former patent attorneys, contending they negligently let a critical patent lapse, allowing competitors to copy the technology, the Milwaukee Journal Sentinel reports.

The Mequon, Wisc.-based company uses a patented process that