Furthermore, the maintenance of patents requires the payment of annual renewal fees country by country and a transfer of the patent or a licensing agreement to use the patented invention has to be registered the same way.
Peale selle tuleb olemasoleva patendi eest maksta iga-aastast pikendamistasu igas riigis eraldi ning patendi ülekandmine või litsentsileping patenditud leiutise kasutamiseks tuleb registreerida samal viisil.