Is a US Patent valid in other countries?
No, patents are limited to the specific territory that granted such, meaning that a US patent is only enforceable in the United States. Additionally, US patents restrict export of the invention and the subsequent commercialized product to other countries.
Patent protection may be obtained in other countries through the filing of a Patent Cooperation Treaty (PCT) application or through direct filing of patent applications in the countries of interest. In general, the NDSU Research Foundation will only file a PCT application or other foreign filing when a licensee commits to cover the patent costs.