Tessera Technologies (TSRA) shares have fallen nearly in half in late trading after the company announced that the Administrative Law Judge overseeing its patent infringement case before the International Trade Commission asserting violation of its wireless patents by a group of semiconductor companies had found no infringement.

The company said that the Initial Determination of the judge upheld the validity of the patents, but found no infringement. Tessera had asserted infringement against the ATI Technologies unit of Advanced Micro Devices, Fresscale Semiconductor, Motorola, Qualcomm, Spansion and STMicroelectronics.

Tessera said it is “disappointed” in the ruling and will review the decision before determining its next steps.

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It’s been a long haul for phase change memory, but the goal is in sight. Numonyx, the memory joint venture between STMicroelectronics and Intel, is already shipping samples of phase change memory (PCM) chips to customers, and will start shipping PCM chips commercially later this year, CEO Brian Harrison said at a press conference Monday. … Hearing a CEO talk about existing samples and near-term commercial shipments is a big deal for PCM. The technology has been stuck in the proverbial “a few years away” phase for a long time.

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