Last month, Wristdocs LLC filed five Western District of Texas lawsuits, one against each of Alphabet (Google), Apple, Garmin, Masimo, and Zepp Health, targeting pulse oximetry. Wristdocs characterized itself as a Tennessee entity, located at a similar but confused mix of Tennessee addresses. Now, all five of those cases have been dismissed without prejudice, in favor of a set of four new affirmative complaints, again filed in the Western District of Texas, but this time by Wrist SP Biotech LLC, which characterizes itself as a Delaware entity and consistently locating itself, across all four actions, at the Reston, Virginia address of several businesses, including one that provides “Traditional IP Services” and “Strategic Patent Services”, as well as “IP Litigation Finance”. Meanwhile, Apple has separately filed a declaratory judgment action against Wrist SP Biotech in the District of Delaware.