Microsoft Corporation vs. Sandpiper CDN, LLC

Explore the PTAB proceeding IPR2026-00180 filed by Microsoft Corporation on 2025-12-24. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00180

Filing Date

2025-12-24

Accorded Filing Date

2025-12-24

Institution Decision Date

2026-06-12

Last Modified Date

2026-09-10

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Kaiser, Jessicaet al

Patent Owner / Respondent

Sandpiper CDN, LLC

Represented By

Eisenberg, Jasonet 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 15588935

Respondent Patent Number 10701173

External Links

Espacenet

Google Patents

Respondent Inventor Christopher Newton et al

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

Address and Attorney/Agent Information

145 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name STERNE, KESSLER, GOLDSTEIN & FOX P.L.L.C.

Customer Number 26111

Address 1101 K Street, NW, 10th Floor, WASHINGTON, DC, 20005, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
28912	Robert Sterne	202-772-8555
29021	Jorge Goldstein	202-371-2600
32831	Tracy-Gene Durkin	202-371-2600
33876	Donald Featherstone	202-772-8629
33997	Michael Ray	202-772-8569
34368	Randy Lacasse	202-772-8678
34395	Robert Millonig	202-371-2600
35239	Michael Lee	703-628-0233
36013	Robert Sokohl	202-371-2600
36351	Karen Markowicz	202-772-8637
36688	Eric Steffe	202-371-8625
38759	John Covert	202-371-2600
39967	Eldora Ellison	202-772-8508
41306	Timothy Shea Jr	202-371-2600
42289	Donald Banowit	202-371-2600
43447	Jason Eisenberg	202-371-2600
44757	Jeffrey Helvey	202-772-8675
45871	Mark Rygiel	202-371-2600
45986	Peter Jackman	202-371-2600
47756	Gaby Longsworth	202-371-2600
48256	Pamela Mingo	202-371-2600
51802	James Hietala	202-772-8795
53812	Daniel Yonan	202-371-2600
54179	Michelle Holoubek	202-772-8855
54463	Michael Specht	202-371-2600
55440	Jennifer Chagnon	202-772-8890
56374	Ross Hicks	202-371-2600
57772	Lori Brandes	202-371-2600
57913	Paul Calvo	202-772-8846
58164	Kristina Kelly	202-776-5284
58403	Marsha Gillentine	202-772-8692
58770	Harish Ruchandani	--
58885	Matthew Bodenstein	202-772-8787
59244	Stephanie Elmer	202-371-2600
59425	Kyle Conklin	202-371-2600
60167	Scott Schaller	202-371-2600
60390	Richard Coller Iii	202-772-8764
60789	Cynthia Derenzo	+358-10-505-6847
60889	Salvador Bezos	202-772-8533
61205	David Holman	202-371-2600
61327	Jonathan Tuminaro	202-371-2600
61868	Dennies Varughese	202-772-8805
62732	Deborah Sterling	202-772-8501
63208	Christopher O'Brien	202-772-8680
63285	Joseph Mutschelknaus	202-371-2600
63504	Ralph Powers Iii	202-772-8876
63929	Jaume Canaves	202-371-2600
64228	Graham Phero	202-772-8860
64515	Daniel Gajewski	202-772-8774
64587	Syed Ahmed	847-289-5228
64974	Michael Gross Iii	202-772-8762
65021	Christian Camarce	202-772-8895
65172	Byron Pickard	202-371-2600
65211	Michael Malek	410-533-1922
65245	Richard Crudo	202-772-8575
65261	Evan Linderman	202-772-8915
65326	Olga Partington	202-772-8626
65367	Jason Fitzsimmons	202-772-8701
65457	Lauren Schleh	703-836-6400
65458	Robert Schmidt	202-772-8716
66568	Branka Bogunovic	202-772-8727
66638	Jeremiah Frueauf	202-772-8506
67254	Ryan Richardson	202-772-8729
67836	Bonnie Nannenga-Combs	202-371-2600
68395	Daniel Block	202-371-2600
68504	Ji Eun Kim	202-371-2600
68658	Richard Bemben	202-371-2600
68887	Amirali Sharifi	202-772-8871
69086	Daniel Bernard	202-371-2600
69105	Nirav Desai	202-371-2600
69199	Tyler Tassone	202-371-2600
69235	Karen Wong-Chan	202-772-8647
69836	Darrin Hopper	202-772-8630
70077	Shoshana Marvin	202-772-8850
70291	Christopher Gallo	202-371-2600
70307	Joshua Mccoy	202-772-8869
70524	Dohm Chankong	202-772-8529
70680	Sarah Leesman	202-371-2600
71185	Rebekah Holtz	202-772-8712
72039	Daniel Choo	202-371-2600
72126	Tyler Liu	202-772-8641
72314	Lestin Kenton Jr.	202-772-8594
72488	Yuke Wang	214-284-3876
72567	Todd Hopfinger	202-772-8696
72762	Bryan Hsu	202-772-8912
72780	Jessica Harrison	202-772-8901
72981	Trevor O'Neill	202-371-2600
73112	David Haars	202-371-2600
73287	Charles Hammond	202-772-8551
73707	Matthew Smith	202-772-8503
73784	Mark Arrington	202-772-8528
73904	Steven Pappas	202-772-8719
74017	Robert Niemeier	309-678-6806
74290	Ian Soule	202-772-8984
74533	Alexander Covington	202-772-8749
74612	Ivy Clarice Estoesta	202-772-8686
74992	John Higgins	202-783-6040
75034	Tyler Drye	202-772-8614
75069	Tyler Dutton	202-772-8982
75187	Timothy Tang	202-772-8758
75234	Rola Aylo	202-772-8810
75269	Roozbeh Gorgin	202-772-8667
75349	Brian Burke	202-772-8861
75455	Tiaotiao Anchondo	202-772-8804
76231	Todd Thurheimer	202-772-8863
76838	Joseph Venier	202-772-8785
76928	Hasina Ali	202-772-8978
76989	Lisa Ritchey	202-371-2600
77163	Randy Montgomery	202-371-2600
77546	Brian Dudley	216-647-1931
77776	Zhichun Zhang	202-772-8813
78359	Kelsey Pitts	202-772-1271
78365	Wenhao Xiong	202-772-8615
78508	Louis Panzica Jr.	202-772-8954
78921	Maria Briscione	202-772-8517
79290	Michael Webb	202-772-8834
79587	Kristofer Schroder	859-991-6529
79831	Christian Berrios	317-345-2233
79850	Paige Cloud	202-371-2600
79858	Matthew Metzger	202-772-8702
800005	Yangbeini Wang	202-772-883
80057	Ethan Goldschen	202-772-1296
80168	Benjamin Nagasing	202-772-8981
80713	Pengke Li	202-772-8602
80729	Masayuki Iino	202-772-8605
80938	Michael Nathanson	202-777-9644
81041	Xiaowei Jin	202-772-8752
81053	Carson Smith	202-772-1272
81060	Michael Guzzano	202-772-8646
81186	Adil Moghal	202-371-2600
81318	Pratibha Khanduri	202-772-8509
81485	Madeleine Bond	202-772-1299
81654	Payton Miles	202-772-1276
81975	Justin Wang	626-388-6351
82104	Maxwell Furigay	202-772-1281
82162	Reuben Moses	202-772-8664
82208	Sara Keeble	202-772-8560
82263	Hailey Mendenhall	202-772-8933
82382	Xinxiang Zhang	202-772-8621
82448	Kaci Kratch	512-517-8691
82703	Thomas Baraldi	202-772-1279
82896	Deepa Shiwcharan	202-772-1284
83022	Jean Selep	202-772-1270
83036	Nicholas Holdreith	202-772-8888
83174	Marc-Anthony Armand	202-772-1283

Proceeding Documents

Patent Owner’s Notice of Remote Lanning Deposition NOTICE

2026-09-08 FILING PARTY: PATENT OWNER

Download

Notice of Joint Stipulation to Modify Due Dates 1, 2, and 3 NOTICE

2026-08-14 FILING PARTY: PATENT OWNER

Download

Petitioner's Updated Mandatory Notices NOTICE

2026-07-24 FILING PARTY: PETITIONER

Download

Scheduling Order ORDER

2026-07-07 FILING PARTY: BOARD

Download

Institution Decision: Grant DECISION

2026-06-12 FILING PARTY: BOARD

Download

Microsoft Corporation vs. Sandpiper CDN, LLC

Proceeding Overview

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Patent Owner / Respondent

Sandpiper CDN, LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Patent Owner’s Notice of Remote Lanning Deposition NOTICE

Notice of Joint Stipulation to Modify Due Dates 1, 2, and 3 NOTICE

Petitioner's Updated Mandatory Notices NOTICE

Scheduling Order ORDER

Institution Decision: Grant DECISION

Patent Owner's Preliminary Surreply OTHER

EX2020 - Petitioner's Request for Preliminary Reply Email Exhibit

E-mail authorizing briefing Exhibit

Petitioner's Preliminary Reply OTHER

Director Discretionary Decision: Refer RESPONSE

Director Discretionary Decision: Refer RESPONSE

Petitioner's Authorized Sur-Reply to Patent Owner's Reply in Support of Its Request for Discretionary Denial OTHER

Patent Owner's Updated Mandatory Notices NOTICE

Patent Owner's Discretionary Denial Reply Brief OTHER

Email Correspondence Exhibit

EX2011 - What is a CDN Exhibit

EX2017 - NYT - Web-page Distribution System Could Unclog Internet Traffic Jams Exhibit

EX2019 - Infringement Contentions (EDTX-2-25-cv-00664) Exhibit

EX2015 - EOY June 2000 Exhibit

EX2010 - CDN Stands For Content Delivery Network Exhibit

EX2012 - Adaptive TTL-Based Caching for Content Delivery Exhibit

EX2008 - Russ Declaration Exhibit

EX2016 - WSJ - Sandpiper Networks' Footprint Takes Exhibit

EX2013 - UCSD-Connect-Newsletter Exhibit

EX2014 - PRNewsWire - Sandpiper Named Best of the Best Exhibit

EX2009 - Russ CV Exhibit

EX2018 - LATimes - Sandpiper Puts Its Footprint in Marketplace Exhibit

Patent Owner's Preliminary Response POPR

EX1057 - U.S. 19/263,989 (U.S. 2026/0006107) - Bibliographic Data - Application - Patent Center - USPTO Exhibit

EX1031 - Sandpiper CDN, LLC v. Comcast Cable Commc’ns LLC, No. 2:24-cv-00886, Dkt. 62 (E.D. Tex.) Exhibit

EX1038 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00860, Paper 15 (Nov. 25, 2025) (Institution Decision) Exhibit

EX1055 - Search 3 - FPO IP Research & Communities Exhibit

EX1029 - Sandpiper CDN, LLC v. Google LLC, No. 2:24-cv-03951, Dkt. 93 (C.D. Cal.) Exhibit

EX1054 - Results 2 - FPO IP Research & Communities Exhibit

EX1036 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00826, Paper 15 (Nov. 7, 2025) (Institution Decision) Exhibit

EX1052 - Results 1 - FPO IP Research & Communities Exhibit

EX1042 - Docket Navigator, Sandpiper CDN, Cases Search Exhibit

EX1044 - Sandpiper CDN, LLC v. Microsoft Corp., No. 2:25-cv-00664, Dkt. 43 (E.D. Tex.) Exhibit

EX1023 - EPO Form 1703 01.91 for European Patent Application No. 15870782.8 Exhibit

EX1033 - Sandpiper CDN, LLC v. Microsoft Corp., No. 2:25-cv-00664, Dkt. 41 (E.D. Tex.) Exhibit

EX1046 - U.S. 2006/0095532 Exhibit

EX1056 - Results 3 - FPO IP Research & Communities Exhibit

EX1035 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00860, -00969, -01010, Paper 14 (Oct. 10, 2025) (referring petitions) Exhibit

Petitioner's Opposition to Patent Owner's Request for Discretionary Denial RESPONSE

EX1025 - Assignment from Level 3 Communications to Sandpiper CDN, LLC Exhibit

EX1040 - Google LLC v. Sandpiper CDN, LLC, IPR2025-01010, Paper 17 (Dec. 1, 2025) (Institution Decision) Exhibit

EX1058 - U.S. 2026/0006107 Exhibit

EX1034 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00806, -00826, Paper 13 (Sept. 12, 2025) (referring petitions) Exhibit

EX1039 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00969, Paper 14 (Nov. 28, 2025) (Institution Decision) Exhibit

EX1041 - Middleton File History (App. No. 12/836,418) Exhibit

EX1043 - Sandpiper CDN, LLC v. Comcast Cable Commc’ns LLC, No. 2:24-cv-00886, Dkt. 132 (E.D. Tex.) Exhibit

EX1045 - Sandpiper CDN, LLC v. Microsoft Corp., No. 2:25-cv-00664, Dkt. 57 (E.D. Tex.) Exhibit

EX1027 - Sandpiper CDN, LLC v. Google LLC, No. 2:24-cv-03951, Dkt. 28 (C.D. Cal.) Exhibit

EX1049 - Sandpiper CDN, LLC v. Microsoft Corp., No. 2:25-cv-00664, Dkt. 32 (E.D. Tex.) Exhibit

EX1037 - Google LLC v. Sandpiper CDN, LLC, IPR2025-00806, Paper 14 (Nov. 10, 2025) (Institution Decision) Exhibit

EX1026 - Sandpiper CDN, LLC v. Google LLC, No. 2:24-cv-03951, Dkt. 1 (C.D. Cal.) Exhibit

EX1053 - Search 2 - FPO IP Research & Communities Exhibit

EX1028 - Sandpiper CDN, LLC v. Google LLC, No. 2:24-cv-03951, Dkt. 45- 1 (C.D. Cal.) Exhibit

EX1051 - Search 1 - FPO IP Research & Communities Exhibit

EX1030 - Sandpiper CDN, LLC v. Comcast Cable Commc’ns LLC, No. 2:24-cv-00886, Dkt. 1 (E.D. Tex.) Exhibit

EX1024 - Sandpiper CDN, LLC, Division of Corporations - Filing Exhibit

EX1032 - Sandpiper CDN, LLC v. Microsoft Corp., No. 2:25-cv-00664, Dkt. 1 (E.D. Tex.) Exhibit

EX1050 - Federal Court Management Statistics for the 12-Month Period Ending 12-31-2025 Exhibit

Email Correspondence Exhibit

Patent Owner's Corrected Discretionary Denial Brief RESPONSE