In 2020, a total of ** patent applications were filed by U.S. companies using the Patent Cooperation Treaty (PCT). A further * patent applications were filed using the Madrid system, and another *** were filed using the Hague system.
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WIPO. (November 1, 2021). Number of international patent applications of U.S. companies from 2002 to 2020, by treaty system used [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 03, 2026, from /statistics/256749/number-of-international-patent-applications-of-us-companies/
WIPO. "Number of international patent applications of U.S. companies from 2002 to 2020, by treaty system used." Chart. November 1, 2021. ÌÇÐÄÆƽâ°æ. Accessed August 03, 2026. /statistics/256749/number-of-international-patent-applications-of-us-companies/
WIPO. (2021). Number of international patent applications of U.S. companies from 2002 to 2020, by treaty system used. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 03, 2026. /statistics/256749/number-of-international-patent-applications-of-us-companies/
WIPO. "Number of International Patent Applications of U.S. Companies from 2002 to 2020, by Treaty System Used." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Nov 2021, /statistics/256749/number-of-international-patent-applications-of-us-companies/
WIPO, Number of international patent applications of U.S. companies from 2002 to 2020, by treaty system used ÌÇÐÄÆƽâ°æ, /statistics/256749/number-of-international-patent-applications-of-us-companies/ (last visited August 03, 2026)
Number of international patent applications of U.S. companies from 2002 to 2020, by treaty system used [Graph], WIPO, November 1, 2021. [Online]. Available: /statistics/256749/number-of-international-patent-applications-of-us-companies/
