Back in March, Discovery Communications, which produces the Discovery Channel and Animal Planet, filed a patent infringement lawsuit against Amazon.com over the Kindle reader's electronic security technology. Now Amazon is firing back. The Seattle online retailer on May 15 sued Discovery, claiming the company infringed on four Amazon patents.
Amazon alleges Discovery infringed on four of its patents related to search query and recommendation technologies. Amazon seeks unspecified damages in the lawsuit, which was filed in U.S. District Court in Western Washington (pdf, 92 pages).
Separately, in U.S. District Court in Delware, where Discovery filed its initial lawsuit, Amazon on May 15 defended itself against the Discovery claims (pdf, 26 pages).
Representatives of Amazon and Discovery Communications could not immediately be reached for comment.
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