On 27 May 1889 Ernest Francillon registered a factory mark consisting of a winged hourglass within a double circle which contained the signature EFCo (Ernest Francillon & Compagnie) and the name Longines. This mark was registered with the Swiss authority that dealt with the protection of trademarks at the time, namely the Federal Office for Intellectual Property (FOIP). For Longines the 1889 registration was the start of an important tradition of graphic and symbolic signatures. Since, for the first time, a trademark whose use and protection in its original form was to continue beyond the 20st century was legally recognised. The protection of the trademark was ensured at an international level in 1893 and makes Longines the oldest trademark still valid in its original form in the international registers of the World Intellectual Property Organisation (WIPO).