A German manufacturer of headlights noticed that its trademark had been applied for by a Brazilian company they has negotiated in the past.
Register your trademark in every country where you may internationalize your company at short or medium term; and in any case, prior to start licensing and/or franchising negotiations. In certain cases and markets it is highly advisable to hire an IPR expert to monitor registrations that may conflict with your trademark. Once you have detected any infringement seek for specialized advice to design a strategy prior to taking any step. Sometimes negotiations are faster and cheaper than judicial proceedings.