Portsmouth Network Corporation v. Cisco Systems, Inc.
2:26-cv-00788
Overview
Case Number
2:26-cv-00788
Filing Date
2026-09-03
Status
Litigation filed
Court
District Court, E.D. Texas
Nature of Suit
830 Patent
Parties
Defendant
Plaintiff
Portsmouth Network Corporation
Represented By
2 Attorneys ListedMiller Fair Henry PLLC
Tel: (903) 757-6400
1507 Bill Owens Parkway, Longview, TX 75604
Steptoe LLP
Tel: (312) 577-1260
Fax: (312) 577-1370
227 West Monroe St., Suite 4700, Chicago, IL 60606
Court & Judges
Court
District Court, E.D. Texas
Presiding Judge
James Rodney Gilstrap
Patents Involved
No asserted patent numbers detected in initial docket filings yet.
Docket Entries
COMPLAINT against Cisco Systems, Inc. ( Filing fee $ 405 receipt number ATXEDC-11777670.), filed by Portsmouth Network Corporation. (Attachments: # 1 Exhibit 1 - '279 Patent, # 2 Exhibit 2 - '899 Patent, # 3 Exhibit 3 - '922 Patent, # 4 Exhibit 4 - '930 Patent, # 5 Exhibit 5 - '508 Patent, # 6 Exhibit 6 - '637 Patent, # 7 Exhibit 7 - Claim Chart, # 8 Exhibit 8 - Claim Chart, # 9 Exhibit 9 - Claim Chart, # 10 Exhibit 10 - Claim Chart, # 11 Exhibit 11 - Claim Chart, # 12 Exhibit 12 - Claim Chart, # 13 Exhibit 13, # 14 Exhibit 14, # 15 Exhibit 15, # 16 Exhibit 16, # 17 Exhibit 17, # 18 Exhibit 18, # 19 Exhibit 19, # 20 Exhibit 20, # 21 Exhibit 21, # 22 Exhibit 22, # 23 Exhibit 23, # 24 Exhibit 24, # 25 Exhibit 25, # 26 Exhibit 26, # 27 Exhibit 27, # 28 Exhibit 28, # 29 Exhibit 29, # 30 Civil Cover Sheet) (Counsel is reminded to file form required by LR CV-4(a).)(Henry, Claire) (Entered: 09/03/2026)
2026-09-03
1
COMPLAINT against Cisco Systems, Inc. ( Filing fee $ 405 receipt number ATXEDC-11777670.), filed by Portsmouth Network Corporation. (Attachments: # 1 Exhibit 1 - '279 Patent, # 2 Exhibit 2 - '899 Patent, # 3 Exhibit 3 - '922 Patent, # 4 Exhibit 4 - '930 Patent, # 5 Exhibit 5 - '508 Patent, # 6 Exhibit 6 - '637 Patent, # 7 Exhibit 7 - Claim Chart, # 8 Exhibit 8 - Claim Chart, # 9 Exhibit 9 - Claim Chart, # 10 Exhibit 10 - Claim Chart, # 11 Exhibit 11 - Claim Chart, # 12 Exhibit 12 - Claim Chart, # 13 Exhibit 13, # 14 Exhibit 14, # 15 Exhibit 15, # 16 Exhibit 16, # 17 Exhibit 17, # 18 Exhibit 18, # 19 Exhibit 19, # 20 Exhibit 20, # 21 Exhibit 21, # 22 Exhibit 22, # 23 Exhibit 23, # 24 Exhibit 24, # 25 Exhibit 25, # 26 Exhibit 26, # 27 Exhibit 27, # 28 Exhibit 28, # 29 Exhibit 29, # 30 Civil Cover Sheet) (Counsel is reminded to file form required by LR CV-4(a).)(Henry, Claire) (Entered: 09/03/2026)
2026-09-03
2
COMPLAINT against Cisco Systems, Inc. ( Filing fee $ 405 receipt number ATXEDC-11777670.), filed by Portsmouth Network Corporation. (Attachments: # 1 Exhibit 1 - '279 Patent, # 2 Exhibit 2 - '899 Patent, # 3 Exhibit 3 - '922 Patent, # 4 Exhibit 4 - '930 Patent, # 5 Exhibit 5 - '508 Patent, # 6 Exhibit 6 - '637 Patent, # 7 Exhibit 7 - Claim Chart, # 8 Exhibit 8 - Claim Chart, # 9 Exhibit 9 - Claim Chart, # 10 Exhibit 10 - Claim Chart, # 11 Exhibit 11 - Claim Chart, # 12 Exhibit 12 - Claim Chart, # 13 Exhibit 13, # 14 Exhibit 14, # 15 Exhibit 15, # 16 Exhibit 16, # 17 Exhibit 17, # 18 Exhibit 18, # 19 Exhibit 19, # 20 Exhibit 20, # 21 Exhibit 21, # 22 Exhibit 22, # 23 Exhibit 23, # 24 Exhibit 24, # 25 Exhibit 25, # 26 Exhibit 26, # 27 Exhibit 27, # 28 Exhibit 28, # 29 Exhibit 29, # 30 Civil Cover Sheet) (Counsel is reminded to file form required by LR CV-4(a).)(Henry, Claire) (Entered: 09/03/2026)
2026-09-03
2
COMPLAINT against Cisco Systems, Inc. ( Filing fee $ 405 receipt number ATXEDC-11777670.), filed by Portsmouth Network Corporation. (Attachments: # 1 Exhibit 1 - '279 Patent, # 2 Exhibit 2 - '899 Patent, # 3 Exhibit 3 - '922 Patent, # 4 Exhibit 4 - '930 Patent, # 5 Exhibit 5 - '508 Patent, # 6 Exhibit 6 - '637 Patent, # 7 Exhibit 7 - Claim Chart, # 8 Exhibit 8 - Claim Chart, # 9 Exhibit 9 - Claim Chart, # 10 Exhibit 10 - Claim Chart, # 11 Exhibit 11 - Claim Chart, # 12 Exhibit 12 - Claim Chart, # 13 Exhibit 13, # 14 Exhibit 14, # 15 Exhibit 15, # 16 Exhibit 16, # 17 Exhibit 17, # 18 Exhibit 18, # 19 Exhibit 19, # 20 Exhibit 20, # 21 Exhibit 21, # 22 Exhibit 22, # 23 Exhibit 23, # 24 Exhibit 24, # 25 Exhibit 25, # 26 Exhibit 26, # 27 Exhibit 27, # 28 Exhibit 28, # 29 Exhibit 29, # 30 Civil Cover Sheet) (Counsel is reminded to file form required by LR CV-4(a).)(Henry, Claire) (Entered: 09/03/2026)
2026-09-03
2