AngioDynamics filed a patent infringement lawsuit against Endovascular Engineering, Inc. (E2) in the U.S. District Court for the District of Delaware on April 23, 2026. The litigation centers on the alleged unauthorized use of AngioDynamics' proprietary self-expanding funnel technology within E2's Hlo Thrombectomy System. The company is seeking both monetary damages and equitable relief to protect its intellectual property.