The number of patent litigation cases in the United States has been increasing over the last two decades, rising from ** cases in the period between 1998 and 2002 to ** cases in the period between 2013 and 2017.
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IPWatchdog. (May 31, 2018). Number of patent litigation cases in the United States between 1998 and 2017, by time period [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1035312/number-of-patent-litigations-in-the-us/
IPWatchdog. "Number of patent litigation cases in the United States between 1998 and 2017, by time period." Chart. May 31, 2018. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1035312/number-of-patent-litigations-in-the-us/
IPWatchdog. (2018). Number of patent litigation cases in the United States between 1998 and 2017, by time period. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1035312/number-of-patent-litigations-in-the-us/
IPWatchdog. "Number of Patent Litigation Cases in The United States between 1998 and 2017, by Time Period." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 May 2018, /statistics/1035312/number-of-patent-litigations-in-the-us/
IPWatchdog, Number of patent litigation cases in the United States between 1998 and 2017, by time period ÌÇÐÄÆƽâ°æ, /statistics/1035312/number-of-patent-litigations-in-the-us/ (last visited July 31, 2026)
Number of patent litigation cases in the United States between 1998 and 2017, by time period [Graph], IPWatchdog, May 31, 2018. [Online]. Available: /statistics/1035312/number-of-patent-litigations-in-the-us/
