3M sues over battery patents

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8 March 2007 — Tokyo (JPN): 3M has filed suits against five electrical giants claiming they have infringed on lithium-ion battery patents.

 

Sony, Lenovo Group, Hitachi, CDW and Panasonic maker Matsushita Electric Industrial have all been named in the suits which focus on the companies importing or selling lithium-ion batteries or products equipped with lithium-ion batteries with cathode components that infringe 3M’s patent rights.