Hollister Inc. filed a pair of lawsuits against C.R. Bard Inc. (NYSE:BCR) and ConvaTec Inc., accusing the duo of infringing a patent covering its bowel waste management system.

The Libertyville, Ill.-based firm’s suits accuse Bard and ConvaTec of violating its patent for a “Bowel Management System And Waste Collection Bag Therefor.” Bard’s allegedly infringing device is its DigniCare stool management system; ConvaTec is alleged to infringe the patent with its Flexi-Seal and Flexi-Seal Signal fecal management systems.