Castellanos & Co

The ‘efficient and highly proactive team’ at IP boutique Castellanos & Co scores highly with clients for its ’comprehensive and personalised advice’. Ranking among the market leaders for both patent and trade mark prosecution, the group also demonstrates strong litigation prowess in both administrative and infringement proceedings. Margarita Castellanos, who leads the patent and legal teams, is primarily recognised for her patent prosecution work, while also maintaining an active trade mark practice; notably, she successfully represented Switzerland-based Invention in appealing a decision issued by the Trademark Office concerning a trade mark application filed by CBS Holding Global. Managing partner Ximena Castellanos heads the trade mark area, where she is recommended for her activity in trade mark registrations and oppositions; she is highlighted, together with Margarita, for their ability to ‘focus on the key issues of a case and offer concrete suggestions on how to best deal with them.’