The right to obtain a patent for an invention is transferable. Patents can be assigned via different types of agreements under Polish civil law. The transfer of the right to a patent to an entrepreneur may be payable (e.g. a sales contract ), and free of charge (e.g. donation agreement).
A patent transfer contract must be made in writing; otherwise, it will be null and void. Transfer of a patent becomes effective vis-à-vis third parties when the transfer is entered in the patent registry. The record of the assignment in the patent register has a declarative effect.
Acceptance by undertaking - if an invention is transferred for use, on the day it is provided in writing the right to obtain a patent passes to the undertaking provided that the undertaking accepts the invention for use and notifies the inventor thereof within 1 month unless the parties set a different time limit.
The patent holder may in a contract authorise (licence) another person to use his invention (licence contract).A licence contract must be made in writing; otherwise, it will be null and void.
In the licence contract use of an invention can be limited (limited licence). If the licence contract does not limit the extent of use of an invention, the licensee is entitled to use the invention to the same extent as the licensor (full licence).
A licence expires at the latest when the patent lapses. The parties may provide for a longer contract term as regards provisions other than the licence, covering in particular payable performances required to use the invention.
If the licence contract does not state that the invention can only be used in a specified manner, a licence being granted to one person does not rule out the possibility of a licence being granted to other persons and also the invention being used by the patent holder at the same time (non-exclusive licence).
The licence holder may grant a further licence (sub-licence) only with the consent of the patent holder; granting further sub-licences is not permitted.
Licences are, on an interested party's application, entered in the patent register. The holder of an exclusive licence entered in the register may on an equal footing with the patent holder bring claims for patent infringement unless the licence contract states otherwise.
Technical information. Unless the licence contract provides otherwise, the licensor is obliged to impart to the licensee any technical information and experience that it has at the time the licence contract is concluded as needed to use the invention.