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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 Statista. Retrieved February 25, 2021, from https://www.statista.com/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. Statista. Accessed February 25, 2021. https://www.statista.com/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. Statista. Statista Inc.. Accessed: February 25, 2021. https://www.statista.com/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." Statista, Statista Inc., 31 May 2018, https://www.statista.com/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 Statista, https://www.statista.com/statistics/1035312/number-of-patent-litigations-in-the-us/ (last visited February 25, 2021)
