StreetInsider.com Morning Movers:

Tessera Technologies, Inc. (NASDAQ: TSRA) 45% LOWER; announced today the Administrative Law Judge overseeing the International Trade Commission action brought by Tessera against certain wireless manufacturers, Investigation No. 337-TA-605 (Wireless ITC action), issued an Initial Determination finding Tessera’s asserted patents are valid but not infringed by the respondents.

XenoPort, Inc. (Nasdaq: XNPT) 35% LOWER; announced today top-line results from a Phase 2 clinical trial that examined the ability of XP19986 (arbaclofen placarbil) extended-release tablets to reduce symptoms experienced by subjects with gastroesophageal reflux disease, or GERD. The primary analysis comparing XP19986 to placebo did not reach