If you become aware of a patent after the expiration of the opposition period, an invalidity suit must be brought before Oslo District Court in order to contest it. The same must be done if the patent is maintained after you have exhausted all opposition opportunities within the PTO. Our patent attorneys and attorneys-at-law can file and litigate such a claim on your behalf.

A transferral case can be filed should you feel that another party has unjustly patented an invention to which you hold ownership.

If the validity of your own patent is contested in court, we will help you defend the patent. In some situations the best defence against invalidation is to request an administrative patent restriction in order to limit the scope of your patent.

Confer also infringements and oppositions & observations.