EXHIBIT 31

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 1 of 16
UNITED STATES PATENT AND TRADEMARK OFFICE

BEFORE THE PATENT TRIAL AND APPEAL BOARD

HUAWEI TECHNOLOGIES CO., LTD.,

Petitioner,

v.

WSOU INVESTMENTS, LLC D/B/A BRAZOS 

LICENSING AND DEVELOPMENT,

Patent Owner.

Case IPR2021-00229

U.S. Patent 8,429,480

PATENT OWNER POWER OF ATTORNEY

Pursuant to 37 CFR § 42.10(b), a Power of Attorney is submitted herewith. 

Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and Development 

hereby appoints the following practitioners as its attorneys to transact all business in 

the United States Patent and Trademark Office associated with Inter Partes Review of 

U.S. Patent No. 8,429,480:

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 2 of 16
Patent Owner’s Lead and Back-up Counsel

Lead Ryan Loveless (Reg. No. 51,970)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

ryan@etheridgelaw.com

972-292-8303

First Back-up Jeffrey A. Stephens (Reg. No. 56,254)

Etheridge Law Group, PLLC

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jstephens@etheridgelaw.com

469-547-7323

Back-up Brett Mangrum (Reg. No. 64,783)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brett@etheridgelaw.com

469-401-2659

Back-up James Etheridge (Reg. No. 37,614)

Etheridge Law Group

2600 E. Southlake Blvd., Ste.120-324

Southlake, TX 76092

jim@etheridgelaw.com

817-470-7249

Back-up Brian Koide (Reg. No. 41,123)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brian@etheridgelaw.com

703-565-2852

Back-up Jeffrey Huang (Reg. No. 68,639)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jeff@etheridgelaw.com

972-292-8303

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 3 of 16
The individual signing below has the authority to execute this document on 

behalf of Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development.

Respectfully submitted,

Stuart Shanus for WSOU 

Investments, LLC d/b/a Brazos 

Licensing and Development

CERTIFICATE OF SERVICE

I certify that the foregoing Patent Owner Power of Attorney was served on 

Petitioner’s counselors of record by electronic notification to:

IPR35548-0130IP1@fr.com 

PTABInbound@fr.com

hawkins@fr.com

Date: November 30, 2020 / Ryan Loveless /

Ryan Loveless

ryan@etheridelaw.com

Reg. No. 51,970

Counsel for Patent Owner

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 4 of 16
UNITED STATES PATENT AND TRADEMARK OFFICE

BEFORE THE PATENT TRIAL AND APPEAL BOARD

UNIFIED PATENTS, LLC

Petitioner

v.

WSOU INVESTMENTS, LLC D/B/A BRAZOS 

LICENSING AND DEVELOPMENT

Patent Owner

Case IPR2021-00378

U.S. Patent 8,179,960

PATENT OWNER POWER OF ATTORNEY

Pursuant to 37 CFR § 42.10(b), a Power of Attorney is submitted herewith. 

Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and Development 

hereby appoints the following practitioners as its attorneys to transact all business in

the United States Patent and Trademark Office associated with Inter Partes Review of

U.S. Patent No. 8,179,960:

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 5 of 16
Ryan Loveless (Reg. No. 51,970)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

ryan@etheridgelaw.com

972-292-8303

Jeffrey A. Stephens (Reg. No. 56,254)

Etheridge Law Group, PLLC

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jstephens@etheridgelaw.com

469-547-7323

Brett Mangrum (Reg. No. 64,783)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brett@etheridgelaw.com

469-401-2659

James Etheridge (Reg. No. 37,614)

Etheridge Law Group

2600 E. Southlake Blvd., Ste.120-324

Southlake, TX 76092

jim@etheridgelaw.com

817-470-7249

Brian Koide (Reg. No. 41,123)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brian@etheridgelaw.com

703-565-2852

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 6 of 16
Jeffrey Huang (Reg. No. 68,639)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jeff@etheridgelaw.com

972-292-8303

The individual signing below has the authority to execute this document on 

behalf of Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development.

Respectfully submitted,

Stuart Shanus for WSOU 

Investments, LLC d/b/a Brazos 

Licensing and Development

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 7 of 16
CERTIFICATE OF SERVICE

I certify that the foregoing Patent Owner Power of Attorney was served on 

Petitioners’ counsel of record by electronic notification by email to: 

raghav.bajaj.ipr@haynesboone.com 

roshan@unifiedpatents.com 

jung@unifiedpatents.com

david.mccombs.ipr@haynesboone.com

jon.bowser.ipr@haynesboone.com

angela.oliver.ipr@haynesboone.com 

Date: December 31, 2020 / Ryan Loveless/

Ryan Loveless

ryan@etheridelaw.com

Reg. No. 51,970

Counsel for Patent Owner

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 8 of 16
UNITED STATES PATENT AND TRADEMARK OFFICE

BEFORE THE PATENT TRIAL AND APPEAL BOARD

JUNIPER NETWORKS INC.

Petitioner

v.

WSOU INVESTMENTS, LLC D/B/A BRAZOS 

LICENSING AND DEVELOPMENT

Patent Owner

Case IPR2021-00538

U.S. Patent 7,596,140

PATENT OWNER POWER OF ATTORNEY

Pursuant to 37 CFR § 42.10(b), a Power of Attorney is submitted herewith. 

Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development hereby appoints the following practitioners as its attorneys to 

transact all business in the United States Patent and Trademark Office associated

with Inter Partes Review of U.S. Patent No. 7,596,140:

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 9 of 16
Ryan Loveless (Reg. No. 51,970)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

ryan@etheridgelaw.com

IPTeam@etheridgelaw.com

972-292-8303

Jeffrey A. Stephens (Reg. No. 56,254)

Etheridge Law Group, PLLC

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jstephens@etheridgelaw.com

469-547-7323

Brett Mangrum (Reg. No. 64,783)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brett@etheridgelaw.com

469-401-2659

James Etheridge (Reg. No. 37,614)

Etheridge Law Group

2600 E. Southlake Blvd., Ste.120-324

Southlake, TX 76092

jim@etheridgelaw.com

817-470-7249

Brian Koide (Reg. No. 41,123)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brian@etheridgelaw.com

703-565-2852

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 10 of 16
Jeffrey Huang (Reg. No. 68,639)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jeff@etheridgelaw.com

972-292-8303

The individual signing below has the authority to execute this document 

on behalf of Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development.

Respectfully submitted,

Stuart Shanus for WSOU 

Investments, LLC d/b/a 

Brazos Licensing and 

Development

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 11 of 16
I certify that the foregoing was served on Petitioner’s counselors of 

record by electronic notification to the email addresses identified in 

Petitioner’s Mandatory Notices:

Lead Counsel

Todd M. Briggs (Reg. No. 44,040)

toddbriggs@quinnemanuel.com

Back-Up Counsel

Nima Hefazi (Reg. No. 63,658)

nimahefazi@quinnemanuel.com

Kevin Johnson (Reg. No. 38,927)

kevinjohnson@quinnemanuel.com

James M. Glass (Reg. No. 46,729)

jimglass@quinnemanuel.com

Date: February 18, 2021 / Ryan Loveless/

Ryan Loveless

ryan@etheridgelaw.com

Reg. No. 51,970

Counsel for Patent Owner

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 12 of 16
UNITED STATES PATENT AND TRADEMARK OFFICE

BEFORE THE PATENT TRIAL AND APPEAL BOARD

ZTE Corporation, ZTE (USA), Inc., and ZTE (TX), Inc.,

Petitioners

v.

WSOU INVESTMENTS, LLC D/B/A BRAZOS 

LICENSING AND DEVELOPMENT

Patent Owner

Case IPR2021-00694

U.S. Patent 7,489,929

PATENT OWNER POWER OF ATTORNEY

Pursuant to 37 CFR § 42.10(b), a Power of Attorney is submitted herewith. 

Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development hereby appoints the following practitioners as its attorneys to 

transact all business in the United States Patent and Trademark Office associated

with Inter Partes Review of U.S. Patent No. 7,489,929:

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 13 of 16
Ryan Loveless (Reg. No. 51,970)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

ryan@etheridgelaw.com

972-292-8303

Jeffrey A. Stephens (Reg. No. 56,254)

Etheridge Law Group, PLLC

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jstephens@etheridgelaw.com

469-547-7323

Brett Mangrum (Reg. No. 64,783)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brett@etheridgelaw.com

469-401-2659

James Etheridge (Reg. No. 37,614)

Etheridge Law Group

2600 E. Southlake Blvd., Ste.120-324

Southlake, TX 76092

IPTeam@etheridgelaw.com

817-470-7249

Brian Koide (Reg. No. 41,123)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

brian@etheridgelaw.com

703-565-2852

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 14 of 16
Jeffrey Huang (Reg. No. 68,639)

Etheridge Law Group

2600 E. Southlake Blvd., Ste. 120-324

Southlake, TX 76092

jeff@etheridgelaw.com

972-292-8303

The individual signing below has the authority to execute this document 

on behalf of Patent Owner WSOU Investments, LLC d/b/a Brazos Licensing and 

Development.

Respectfully submitted,

Stuart Shanus for WSOU 

Investments, LLC d/b/a 

Brazos Licensing and 

Development

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 15 of 16
CERTIFICATE OF SERVICE

I certify that the foregoing was served on Petitioner’s counselors of 

record by electronic notification to the email addresses identified in 

Petitioner’s Mandatory Notices:

ZTE-WSOU-IPRs@finnegan.com;

lionel.lavenue@finnegan.com;

cory.bell@finnegan.com;

Bradford.schulz@finnegan.com;

mingji.jin@finnegan.com;

r.maxwell.mauldin@finnegan.com; 

Date: March 25, 2021 / Ryan Loveless/

Ryan Loveless

ryan@etheridgelaw.com

Reg. No. 51,970

Counsel for Patent Owner

Case 6:20-cv-00477-ADA Document 111-6 Filed 08/20/21 Page 16 of 16