Airbus has filed a motion to enjoin Wilmer Hale and Marco Bronckers from representing Boeing, in light of Bronckers' earlier work for Airbus. Interestingly, the basis for Airbus' claim is the Washington DC Rules of Professional Conduct, which I suppose are being applied to the Wilmer Hale firm. There may be some questions about the applicability of these rules to a Brussels lawyer involved in Geneva litigation. From the Wilmer Hale website, it does not look like Bronckers is admitted in DC.