Does a U.S. Patent provide protection from foreign competition?

A U.S. patent will bar competitors from infringing activities within the U.S. and its possessions, such as manufacturing, selling or importing a patented device or using a patented process or method. But a U.S. patent cannot be used to prevent activities that are conducted outside of the U.S. jurisdiction. For example, a U.S. patented drug may be manufactured in China for sale in Egypt without infringing on the U.S. patent. To obtain foreign patent protection, the inventor or owner of the U.S. patent rights must apply in the patent offices of the countries or regions in which protection is sought. Under the international Patent Cooperation Treaty, a PCT patent application can be filed, which establishes an international priority date based on the earliest U.S. patent filings, and which provides a 20 to 30-month “window” in which to file “national stage” patent applications in the selected countries or regions.

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