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Turning ideas into assets

How to file a patent

In Denmark, an exclusive right to an invention may be obtained through the filing of a patent application with the Danish Patent and Trademark Office. The exclusive right applies from the date of filing the patent application onwards for up to 20 years.

To obtain a patent for an invention, the invention must:

  • Be new (global novelty)
  • Differ essentially from the prior art
  • Be industrially applicable

Patents can be granted for products, methods, apparatuses and applications.

Both a novelty search and a patentability examination are performed when examining the patent application. The applicant will receive a reply hereto within 6 to 10 months of the date of filing. Hereafter, it becomes possible for the applicant to proceed with the patent application internationally, either as an international application (PCT), European application (EP), or filing in another country with priority from the Danish application. Such applications must be filed within 12 months of the date of filing the application.

The applicant will receive the first evaluation of patentability within 6 to 10 months of the date of filing. If the invention is patentable, a patent will be obtained after approximately 3 years. However, more speedy issuing of a patent is possible in special cases.

The basic fee for a patent application is DKK 3,000. The price list of the Danish Patent and Trademark Office includes information about other fees related to patents.

VAT will not be added to the above fee.


See our price list


See our Guide for filling in the Patent Application Form


See our guide for Multiple inventions


See our guide for Excision


Find the application form here