"On August 27, 2021, #UnifiedPatents added a new PATROLL contest, with a $2,500 cash prize, seeking prior art on at least claim 1 of U.S. Patent 8,621,578." #swpats again: "demand letters to owners of websites that simply use #Captcha as a verification method" https://www.unifiedpatents.com/insights/2021/8/27/2500-for-defenders-of-the-american-dream-prior-art
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