Businesses and individuals filed a record 851 patent infringement lawsuits in November - more than half of them in the federal courts of East Texas - just before new judicial rules took effect that may make it more difficult for their cases to succeed. Lawyers filed 467 new patent cases last month in the U.S. District Court of the Eastern District of Texas. That represents 32 percent more infringement lawsuits than ever filed in a single month in any federal judicial district in U.S. history, according to legal-research provider Lex Machina.
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