Bell Helicopter has filed its own lawsuit against Eurocopter. The suit comes after a June 16 incident at this year’s Paris Air Show. According to Reuters, a French bailiff turned up at Bell’s booth armed with legal documents, forcing the company to remove panels from its 429 to allow inspection. Eurocopter previously filed a lawsuit against Bell for patent infringement, based on the accusation that Bell illegally copied patented Eurocopter landing gear technology and used it in developing the 429. The Paris incident interfered with Bell’s 429 flight schedule, and was somewhat embarrassing for the U.S. company. Bell is asking the U.S. District Court for damages to cover one-quarter of the cost of running its Paris Air Show booth, including expenses related to sending company personnel to the show and the shipment of the 429. Eurocopter is not commenting on the lawsuit.