Explore the details of the Headwater Research LLC v. AT&T Services, Inc. et al case under case number 2:2025cv00464 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
2:2025cv00464
Filing Date
May 2, 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 Enterprises, LLC
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
13134005US8635335B2
15369542US10237757B2
16272098US10791471B2

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 19, 2025Unopposed Application for Extension of Time to Answer Complaint is granted. AT&T Enterprises, LLC answer is now due 7/14/2025. (Text entry only, no document attached.)(NKL) (Entered: 05/19/2025)-
May 19, 2025Unopposed Application for Extension of Time to Answer Complaint is granted. AT&T Mobility, LLC answer is now due 7/14/2025. (Text entry only, no document attached.)(NKL) (Entered: 05/19/2025)-
May 19, 2025Unopposed Application for Extension of Time to Answer Complaint filed by AT&T Enterprises, LLC. Summons originally served on 05/08/2025. Agreed new answer date is 07/14/2025.(Dacus, Deron) (Entered: 05/19/2025)-
May 19, 2025Unopposed Application for Extension of Time to Answer Complaint filed by AT&T Mobility, LLC. Summons originally served on 05/08/2025. Agreed new answer date is 07/14/2025.(Dacus, Deron) (Entered: 05/19/2025)-
May 19, 2025Unopposed Application for Extension of Time to Answer Complaint filed by AT&T Enterprises, LLC, AT&T Mobility, LLC, AT&T Services, Inc.. Summons originally served on 05/08/2025. Agreed new answer date is 07/14/2025.(Dacus, Deron) (Entered: 05/19/2025)-
May 14, 2025SUMMONS Returned Executed by Headwater Research LLC. AT&T Mobility, LLC served on 5/8/2025. (Fenster, Marc) (Entered: 05/14/2025)SUMMONS
May 14, 2025SUMMONS Returned Executed by Headwater Research LLC. AT&T Enterprises, LLC served on 5/8/2025. (Fenster, Marc) (Entered: 05/14/2025)SUMMONS
May 6, 2025SUMMONS Issued as to All Defendants. (Attachments: # 1 Additional Attachment(s), # 2 Additional Attachment(s))(KLC) (Entered: 05/06/2025)SUMMONS
May 2, 2025 Fed. R. Civ. P. 7.1(a)(1) Disclosure Statement filed by Headwater Research LLC (Fenster, Marc) (Entered: 05/02/2025)-
May 2, 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: 05/02/2025)-
May 2, 2025COMPLAINT FOR PATENT INFRINGEMENT against All Defendants ( Filing fee $ 405 receipt number ATXEDC-10819790.), 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: 05/02/2025)COMPLAINT FOR PATENT INFRINGEMENT