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UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

COBBLESTONE WIRELESS, LLC, 

Plaintiff, 

v. 

CELLCO PARTNERSHIP d/b/a VERISON

WIRELESS

Defendants, 

ERICSSON INC., and NOKIA OF AMERICA 

CORPORATION

Intervenors,

CASE No. 2:23-cv-00382-JRG-RSP

(LEAD CASE)

JURY TRIAL DEMANDED

COBBLESTONE WIRELESS, LLC, 

Plaintiff, 

AT&T MOBILITY LLC, AT&T SERVICES, INC., 

AND AT&T CORP.,

Defendants,

ERICSSON INC., and NOKIA OF AMERICA 

CORPORATION

Intervenors,

Case No. 2:23-cv-00380-JRG-RSP

(Member Case)

COBBLESTONE WIRELESS, LLC, 

Plaintiff, 

v. 

T-MOBILE USA, INC.

Defendant,

ERICSSON INC., and NOKIA OF AMERICA 

CORPORATION

Intervenor

Case No. 2:23-cv-00381-JRG-RSP

(Member Case)

Case 2:23-cv-00382-JRG-RSP Document 92 Filed 01/26/24 Page 1 of 6 PageID #: 781
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PLAINTIFF COBBLESTONE WIRELESS, LLC’S RESPONSE TO INTERVENOR 

ERICSSON INC.’S COUNTERCLAIMS (AT&T)

Plaintiff Cobblestone Wireless, LLC (“Cobblestone” or “Plaintiff”) hereby answers the 

Counterclaims of Intervenor Ericsson Inc., (“Ericsson” or “Intervenor”), as follows:

THE PARTIES

1. Admit.

2. Admit.

JURISDICTION AND VENUE

3. Admit that Intervenor’s counterclaims arise under the patent laws of the United 

States and that Intervenor seeks certain declaratory relief. Deny that Intervenor is entitled to any 

such relief. Deny any other allegations in this paragraph.

4. Admit that Intervenor’s counterclaims arise under the patent laws of the United 

States and that Defendant seeks certain declaratory relief. Deny that Intervenor is entitled to any 

such relief. Deny any other allegations in this paragraph.

5. Admit.

6. Admit that venue is proper in this district. Deny any other allegations in this 

paragraph.

7. Admit that there is a case or controversy between the parties concerning alleged 

infringement of the Patent-in-Suit. Deny any other allegations in this paragraph.

8. Admit that there is a case or controversy between the parties concerning alleged 

infringement of the Patent-in-Suit. Deny any other allegations in this paragraph.

FIRST COUNTERCLAIM DECLARATION OF NON-INFRINGEMENT OF U.S. 

PATENT NO. 7,924,802

9. Plaintiff realleges Paragraphs 1-8 as though fully set forth herein.

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10. Admit that Plaintiff’s allegations in its Complaint speak for themselves. Deny any 

other allegations in this paragraph.

11. Admit that Intervenor denies that any of Intervenor’s equipment and technology 

infringes any valid claim of the ’802 Patent. Deny any other allegations in this paragraph.

12. Deny.

13. Admit that Intervenor denies that any Intervenor’s equipment and technology has 

infringed or infringes any valid claim of the ’802 Patent. Deny any other allegations in this 

paragraph.

14. Admit that there is a case or controversy between the parties concerning alleged 

infringement of the ’802 Patent. Deny any other allegations in this paragraph.

15. Deny.

16. Deny.

SECOND COUNTERCLAIM – DECLARATION OF INVALIDITY OF U.S. 

PATENT NO. 7,924,802

17. Plaintiff realleges Paragraphs 1-16 as though fully set forth herein.

18. Deny.

19. Admit that there is a case or controversy between the parties concerning alleged 

validity of the ’802 Patent. Deny any other allegations in this paragraph.

20. Deny.

PRAYER FOR RELIEF

WHEREFORE, Cobblestone prays for the following relief with respect to Intervenor’s

counterclaims:

A. A judgment in favor of Plaintiff on all counterclaims asserted by Intervenor;

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B. An adjudication that Intervenor is not entitled to any relief on its counterclaims, 

including, without limitation, any fine or damages; and

C. A dismissal with prejudice of Intervenor’s counterclaims;

D. A judgment and order finding that this is an exceptional case within the meaning 

of 35 U.S.C. § 285 and awarding to Plaintiff its reasonable attorneys’ fees against 

Intervenor; 

E. Plaintiff’s costs of suit against Intervenor; and

F. Any and all other relief as the Court may deem appropriate and just under the 

circumstances.

DEMAND FOR JURY TRIAL

Cobblestone demands a trial by jury on all issues so triable.

Dated: January 26, 2024 Respectfully submitted,

/s/ Reza Mirzaie

Reza Mirzaie 

CA State Bar No. 246953 

Marc A. Fenster 

CA State Bar No. 181067 

Neil A. Rubin 

CA State Bar No. 250761 

Amy E. Hayden

CA State Bar 287026

Jacob R. Buczko

CA State Bar No. 312773

Peter Tong

TX State Bar No. 2419042

Matthew D. Aichele

VA State Bar No. 77821

Christian W. Conkle 

CA State Bar No. 306374 

Jonathan Ma 

CA State Bar No. 312773

RUSS AUGUST & KABAT 

12424 Wilshire Boulevard, 12th Floor 

Los Angeles, CA 90025 

Case 2:23-cv-00382-JRG-RSP Document 92 Filed 01/26/24 Page 4 of 6 PageID #: 784
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Telephone: 310-826-7474 

Email: rmirzaie@raklaw.com 

Email: mfenster@raklaw.com 

Email: nrubin@raklaw.com 

Email: ahayden@raklaw.com

Email: jbuczko@raklaw.com

Email: ptong@raklaw.com

Email: maichele@raklaw.com

Email: cconkle@raklaw.com

Email: jma@raklaw.com

Case 2:23-cv-00382-JRG-RSP Document 92 Filed 01/26/24 Page 5 of 6 PageID #: 785
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CERTIFICATE OF SERVICE

The undersigned certifies that on January 26, 2024, all counsel of record who are deemed 

to have consented to electronic service are being served with a copy of this document via the 

Court’s CM/ECF system pursuant to Local Rule CV-5(a)(3)(A).

/s/ Reza Mirzaie_______

Reza Mirzaie

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