Dusa Targets Chemical Supplier, Physicians In Suits

By Catherine Fredenburgh (July 11, 2006, 12:00 AM EDT) -- In an aggressive attack to assert its patents related to aminolevulinic acid, Dusa Pharmaceuticals Inc. has shot off a spate of lawsuits against an Arizona chemical supplier and six physicians in multiple states for infringing its patents and, in some cases, engaging in unfair competition and infringing its trademark....

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