Berlex filed a lawsuit against Biogen in U.S. District Court in Newark , N.J. in July , but Biogen had already filed a suit against Berlex in Massachusetts in May .
<response> <organization>Berlex</organization> filed a lawsuit against <organization>Biogen</organization> in <organization>U.S. District Court</organization> in <location>Newark</location> , <location>N.J.</location> in July , but <organization>Biogen</organization> had already filed a suit against <organization>Berlex</organization> in <location>Massachusetts</location> in May . </response>