Target Corporation vs. HEADWATER RESEARCH LLC

Explore the PTAB proceeding IPR2026-00154 filed by Target Corporation on 2025-11-25. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00154

Filing Date

2025-11-25

Accorded Filing Date

2025-11-25

Institution Decision Date

2026-03-23

Last Modified Date

2026-04-23

Proceeding Type

IPR

Termination Date

2026-03-23

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Target Corporation

Represented By

Hawkins, Michaelet al

Patent Owner / Respondent

HEADWATER RESEARCH LLC

Represented By

Mirzaie, Rezaet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2400 - Computer Networks, Multiplex & Cybersecurity

Patent Information

1 Patent Involved

Respondent Application Number 15211430

Respondent Patent Number 9615192

External Links

Espacenet

Google Patents

Respondent Inventor Gregory G. Raleigh

Respondent Tech Center TC 2400 - Computer Networks, Multiplex & Cybersecurity

Address and Attorney/Agent Information

9 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Lowenstein & Weatherwax LLP (Headwater) - ATTN: Headwater Research LLC

Customer Number 201497

Address 1016 Pico Blvd, Santa Monica, CA, 90405, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
54528	Kenneth Weatherwax	310-307-4503
61476	Dale Chang	310-826-7474
64817	Amy Hayden	310-826-7474
67030	Neil Rubin	310-826-7474
69138	Reza Mirzaie	(908) 203-6515
71470	Parham Hendifar	310-948-3425
74292	Qi Tong	310-826-7474
74621	Philip Wang	310-826-7474
79503	James Milkey	310-975-7074

Proceeding Documents

Notice: refund approved NOTICE

2026-04-06 FILING PARTY: BOARD

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Petitioner's Request for Refund OTHER

2026-04-02 FILING PARTY: PETITIONER

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Director Discretionary Decision: Deny RESPONSE

2026-03-23 FILING PARTY: BOARD

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1075

Samsung v. Headwater, IPR2024-00341, Paper 33 Exhibit

2026-03-02 FILING PARTY: PETITIONER

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1064

Verizon v. Headwater, IPR2024-00809, Paper 21, Final Written Decision Exhibit

2026-03-02 FILING PARTY: PETITIONER

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Target Corporation vs. HEADWATER RESEARCH LLC

Proceeding Overview

Parties & Counsel

Petitioner

Target Corporation

Represented By

Patent Owner / Respondent

HEADWATER RESEARCH LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Petitioner's Request for Refund OTHER

Director Discretionary Decision: Deny RESPONSE

Samsung v. Headwater, IPR2024-00341, Paper 33 Exhibit

Verizon v. Headwater, IPR2024-00809, Paper 21, Final Written Decision Exhibit

Headwater v. Samsung, No. 2:23-cv-00103, Dkt. 434 Exhibit

Samsung v. Headwater, IPR2024-00341, Paper 12, Institution Decision Exhibit

Petitioner's Opposition to Patent Owner's Discretionary Denial Brief RESPONSE

Headwater Research v. Google LLC, MO:25-cv-003231-DC-DTG Exhibit

Headwater v. Google, No. 7:25-cv-00231, Dkt. 83 Exhibit

Samsung v. Headwater, Paper 27, Termination Order Exhibit

Samsung v. Headwater, IPR2024-00341, Paper 4, IPR Petition Exhibit

Amazon v. Headwater, No. 7:25-cv-00286, Dkt. 29 Exhibit

cpc-definition-H04W Exhibit

File History of US 9,615,192 Exhibit

PTAB Institutions Search Exhibit

Headwater Assignments Exhibit

US 9,198,042 Exhibit

Federal Court Management Statistics Exhibit

MMS Architecture - Wikipedia Exhibit

Headwater Cases Search Exhibit

Samsung v. Headwater, IPR2024-00341, Paper 28, Final Written Decision Exhibit

Amazon v. Headwater, No. 7:25-cv-00286, Dkt 39 Exhibit

Samsung v. Headwater, IPR2024-00010, Paper 25, Joint Motion to Terminate Exhibit

US 8,406,733 Exhibit

Continuity data for 780 application Exhibit

Samsung v. Headwater, IPR2024-00010, Paper 24 (transcript of hearing held March 5, 2025) Exhibit

Google v. Headwater, IPR2024-00942,,-943, Paper 20, Final Written Decision Exhibit

US 8,589,541 Exhibit

Headwater v. Walmart, No. 2:25-cv-009610-JRG-RSP, Dkt 91 Exhibit

IPRs Regarding Headwater Patents Currently Asserted in Litigation Exhibit

Samsung v. Headwater, IPR2024-00010, Paper 7, Institution Decision Exhibit

US Patent 10321320 Exhibit

Headwater v. Walmart, No. 2:25-cv-00961, Dkt. 8 Exhibit

US8340634 Exhibit

Samsung v. Headwater, IPR2024-00010, Paper 2, IPR Petition Exhibit

Ex. 2008 - Google’s Preliminary Invalidity Contentions in Headwater Research LLC v. Google LLC, Case 7:25-CV-00231-DC-DTG (E.D. Tex.) Exhibit

Ex. 2005 - Order Granting Joint Motion to Dismiss in Headwater Research LLC v. AT&T Services, Inc. et al., No. 2:23-cv-00397-JRG-RSP (E.D. Tex. Nov. 13, 2025) Exhibit

Ex. 2004 - Order Granting Joint Motion to Dismiss in Headwater Research LLC v. T-Mobile USA, Inc. et al., Nos. 2:23-cv-379-JRG-RSP and 2:23-cv- 377-JRG-RSP (E.D. Tex. Nov. 13, 2025) Exhibit

Ex. 2006 - Target’s Motion to Stay in Headwater Research LLC v. Target Corporation, No. 2:25-cv-00963-JRG RSP (E.D. Tex.) Exhibit

Ex. 2003 - Joint Motion to Dismiss in Headwater Research LLC v. Samsung Electronics Co., Ltd. et al., No. 2:23-cv-103-JRG-RSP (E.D. Tex. Sept. 11, 2025) Exhibit

Ex. 2009 - Google’s Opening Claim Construction Brief in Headwater Research LLC v. Google LLC, Case 7:25-CV-00231-DC-DTG (E.D. Tex.) Exhibit

Ex. 2002 - Joint Motion to Dismiss in Headwater Research, LLC v. Apple, Inc., No. 7:25-cv-00371-ADA (W.D. Tex.) Exhibit

Ex. 2001 - Notice of Partial Settlement in Headwater Research LLC v. Amazon.com Services LLC et al., No. 7:25-cv-00286-ADA (W.D. Tex. Nov. 10, 2025) Exhibit

Ex. 2007 - Scheduling Order in Headwater Research LLC v. Google LLC, Case 7:25-CV-00231-DC-DTG (E.D. Tex.) Exhibit

PATENT OWNER'S REQUEST FOR DISCRETIONARY DENIAL OF INSTITUTION RESPONSE

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Stipulation Letter dated January 2, 2026 Exhibit

Petitioner's Updated Exhibit List NOTICE

Notice: Notice filing date accorded NOTICE

Claim Construction Order, Case No. 2:23-cv-00103 Exhibit

Rodermund, A Picture Speaks a Thousand Words – From SMS to MMS Exhibit

3GPP TS 23.140 v6.9.0 (2005-03) Exhibit

U.S. Patent Pub. No. 2009/0282256 to Rakic et al. Exhibit

Complaint for Patent Infringement, Case No. 2:23-cv-00103 Exhibit

Mostafa, Transporting data between wireless applications using a messaging Exhibit

Lu, et al., Heading for Multimedia Message Service in 3G Exhibit

Higginson, Platform Security Concepts Exhibit

Petition: as filed PETITION

WO 2008/048075 A1 to Lee et al. Exhibit

U.S. Patent Pub. No. 2005/0207379 to Shen et al. Exhibit

U.S. Patent No. 7,925,717 to Chou et al. Exhibit

Ramsdell, S/MIME Version 3 Message Specification Exhibit

U.S. Patent Pub. No. 2005/0144294 to Gellens et al. Exhibit