text: 1991 Adolph Coors lawsuit In 1991, Energizer Holdings unsuccessfully sued the Adolph Coors Company for copyright and trademark infringement for creating a parody of its Energizer bunny ads.
  The advertisement had comedian Leslie Nielsen banging a bass drum while wearing rabbit ears while the announcer said "It keeps growing and growing!" The court eventually sided with Coors noting the obvious facts that the content of the ad is substantially different considering Nielsen was not a toy and he did not run on batteries.
  2016 Duracell distribution lawsuit
  In February 2016, Energizer filed a trademark infringement and contract violation lawsuit against Duracell.  Energizer alleged that Duracell was using a pink bunny in its advertising in the United States, did not have any trademark rights in the United States in a pink bunny, and had violated an agreement between Energizer and Duracell governing the use of a pink bunny trademark in the U.S. Duracell replied that the cases Energizer cited came from overseas distributors importing packages from abroad, and that Duracell did not have the specific power to stop those distributors from doing so. In November 2017, a United States District court judge threw out most of Energizer's claims in a summary judgement, but leaving the breach of the 1992 territorial contract dispute active with respect to the two companies' bunny trademarks.