MDSP Technologies LLC has launched litigation in the Western District of Texas with separate suits against Alphabet (Google) (6:23-cv-00257), Apple (6:23-cv-00254), Garmin (6:23-cv-00255), Samsung (6:23-cv-00259), and TomTom (6:23-cv-00260). Asserted are two patents generally related to using “Doppler frequency observables” on a mobile device to determine speed, with the complaints targeting various devices (e.g., navigation devices, smartphones, and smartwatches) for the alleged incorporation of “Doppler aided navigation systems”.
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