Diomed cleared of patent infringement

Andover-based Diomed Holdings Inc. said this morning that a federal judge dismissed a patent infringement lawsuit against the company, ending litigation that had been brought by rival AngioDynamics.

The latter filed suit in January claiming Diomed violated its patent for the use of a particular laser treatment for varicose veins. Diomed claims that the patent was issued on the same day the lawsuit was filed.
Diomed specializes in using laser technologies to treat vein ailments.
(By Keith Reed, Globe staff)