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Headwater sued multiple wireless carriers asserting a five-patent set including the '464 patent; the case was dismissed without prejudice by joint stipulation under Rule 41(a)(1)(A)(ii), each party bearing its own costs.

Headwater's February 2025 suit against AT&T entities asserted the same five-patent set including the '464 patent; it was dismissed without prejudice by joint stipulation under Rule 41(a)(1)(A)(ii).

Headwater sued T-Mobile and Sprint asserting the '464 patent, including independent claim 11, and also asserting U.S. Patent No. 11,985,155. The case remained open/pending, with IPR petitions filed as part of the broader carrier campaign.

Headwater sued Google asserting a seven-patent set including the '464 patent, targeting Google mobile devices, eSIM-enabled devices, and Google Fi MVNO services. The case was pending with active motion practice.

Google Patents' litigation records list this W.D. Tex. action as involving the '464 patent, but the defendant identity and full patent set were not confirmed from available data.

Headwater sued Charter Communications in the August 2025 wave asserting a seven-patent set including the '464 patent, as identified in PTAB petition disclosures. The case was pending.

Headwater sued DISH entities asserting a seven-patent set including the '464 patent; EchoStar's Form 10-Q stated it intended to vigorously defend and disclosed potential damages exposure.

Headwater sued Comcast Cable Communications d/b/a Xfinity asserting the same seven-patent set including the '464 patent as in related cases, per PTAB petition disclosures. The case was pending.