3M Files 2nd Patent Suit Against Andover Healthcare

3M voluntarily dismissed a previous suit against Andover Healthcare regarding the packing of bandages it manufactures, but this time 3M is suing over the actual product.

Maplewood-based 3M Company-along with subsidiary 3M Innovative Properties Company-has filed a second copyright infringement lawsuit against Salisbury, Massachusetts-based Andover Healthcare, Inc., regarding its bandage products.

According to the complaint, filed in U.S. District Court in Minneapolis on Tuesday, Andover's Coflex 2 two-layer compression bandages infringe on 3M's Coban two-layer compression bandage, which it has a patent for.

In April, 3M filed an infringement suit against Andover Healthcare over the packaging of the same product. 3M voluntarily dismissed that suit in June.

3M wants Andover Healthcare to stop selling its Coflex 2 bandages and to pay an unspecified amount in damages, injunctive relief, and attorney fees.

3M-which provides technologies for the consumer, electronics, health care, industrial, and transportation markets-is among Minnesota's five-largest public companies based on revenue, which exceeds $23 billion annually.