Devon & Associates | Marcia A. Devon
Each country has their own patent laws and issue their own patents. A U.S. patent prevents others from making, using or selling a product which infringes your patent claims in the U.S. For example, an infringer could not manufacture a product in a foreign country which infringes your U.S. patent and sell in the United States. If you would like to prevent sales of your invention in foreign countries, you should consider filing a Patent Convention Treaty ("PCT") application. You will designate the countries (signatories to the treaty) in which you desire patent protection. You do not have to reside in or have any other contact with the foreign country in order to file a foreign patent.
Answer Applies to: California