Explore the details of the Headwater Research LLC v. AT&T Inc. et al case under case number 2:2025cv00428 involving a cause of action for Patent Infringement. Review key information about the parties involved, the patents in question, and the docket entries.

Case Details

Case Number
2:2025cv00428
Filing Date
Apr 23, 2025
Cause of Action
Patent Infringement
Status
OPEN
Case Link
View Case
Nature of Suit
830

Plaintiffs

The following plaintiffs are involved in this case, with their respective legal representatives for the case.

CompanyRepresented By
Headwater Research LLC
Russ August & Kabat - Los Angeles

Defendants

The following defendants are involved in this case, with their respective legal representatives for the case.

CompanyRepresented By
AT&T Corp.
The Dacus Firm, PC
AT&T Inc.
The Dacus Firm, PC
AT&T Mobility, LLC
The Dacus Firm, PC
AT&T Services Inc.
The Dacus Firm, PC

Patents Involved in the Case

This case involves 3 patents, each of which is central to the dispute. These patents may be subject to claims of infringement, challenges to their validity, or other issues concerning their scope and enforcement.

Application NumberPatent Number
12380771US8023425B2
12380773US8799451B2
13678417US8631102B2

Docket Entries

The Docket Entries section provides a chronological list of all significant filings and court actions in this case.

DateDocket EntryType

Set alerts for critical docket entry

May 13, 2025Unopposed Application for Extension of Time to Answer Complaint is granted. AT&T Corp. answer is now due 7/3/2025; AT&T Inc. answer is now due 7/3/2025; AT&T Mobility, LLC answer is now due 7/3/2025; AT&T Services Inc. answer is now due 7/3/2025. (Text entry only, no document attached.)(slo) (Entered: 05/13/2025)-
May 12, 2025Unopposed Application for Extension of Time to Answer Complaint filed by AT&T Mobility, LLC, AT&T Services Inc., AT&T Inc., AT&T Corp.. Summons originally served on 04-28-2025. Agreed new answer date is 07-03-2025.(Dacus, Deron) (Entered: 05/12/2025)-
Apr 24, 2025SUMMONS Issued as to AT&T Corp., AT&T Inc., AT&T Mobility, LLC, AT&T Services Inc.. (Attachments: # 1 Additional Attachment(s), # 2 Additional Attachment(s), # 3 Additional Attachment(s))(mdj) (Entered: 04/24/2025)SUMMONS
Apr 23, 2025 Notice of Filing of Patent/Trademark Form (AO 120). AO 120 emailed to the Director of the U.S. Patent and Trademark Office. (Fenster, Marc) (Entered: 04/23/2025)-
Apr 23, 2025 Fed. R. Civ. P. 7.1(a)(1) Disclosure Statement filed by Headwater Research LLC (Fenster, Marc) (Entered: 04/23/2025)-
Apr 23, 2025COMPLAINT FOR PATENT INFRINGEMENT against All Defendants ( Filing fee $ 405 receipt number ATXEDC-10799874.), filed by Headwater Research LLC. (Attachments: # 1 Exhibit 1, # 2 Exhibit 2, # 3 Exhibit 3, # 4 Exhibit 4, # 5 Exhibit 5, # 6 Exhibit 6, # 7 Civil Cover Sheet)(Fenster, Marc) (Entered: 04/23/2025)COMPLAINT FOR PATENT INFRINGEMENT