Anthropic PBC v. United States Department of War, et al
Petitioner: Anthropic PBC
Respondent: United States Department of War and Peter B. Hegseth, in his official capacity as Secretary of War
Amicus Curiae: Employees of OpenAI and Google in their personal capacities, Joel Thayer, Senior Fellow at the America First Policy Institute, Foundation for Individual Rights and Expression, Electronic Frontier Foundation, Cato Institute, Chamber of Progress, First Amendment Lawyers Association, Alan Z. Rozenshtein, Freedom Economy Business Association, Candide Group, Howard Fischer, Thomas Haslett, Investor Advocates for Social Justice, Mission Driven Finance, The Nathan Cummings Foundation, Inc., Omidyar Network LLC, Pluralize Capital, The Interfaith Center on Corporate Responsibility, Humanize Wealth, John O'Farrell, 149 Former Judges, ACT | The App Association, American Civil Liberties Union, Dean Ball, Catholic Moral Theologians and Ethicists, Center for Democracy and Technology, ChinaTalk, Martin Chorzempa, Computer & Communications Industry Association, Democracy Defenders Fund, Fathom, Taxpayers Protection Alliance Foundation, Fifty Years, Former Senior National Security Government Officials, Former Service Secretaries, Leon E. Panetta, Former Secretary of Defense, Foundation for American Innovation, Institute for Security and Technology, Alex Imas, Faith Family Technology Network, Information Technology Industry Council, Institute for Progress, Saif Khan, Pangram, Dwarkesh Patel, Retired Senior Military Officers, Roots of Progress, Software & Information Industry Association, TechNet and James Lakner
Case Number: 26-1049
Filed: March 9, 2026
Court: U.S. Court of Appeals, D.C. Circuit
Nature of Suit: Other
Docket Report

This docket was last retrieved on May 6, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
May 6, 2026 RESPONDENT BRIEF [2172140] filed by Peter B. Hegseth and United States Department of War [Service Date: 05/06/2026 ] Length of Brief: 12,966 words. [26-1049] (Janda, Sean) [Entered: 05/06/2026 08:54 PM]
May 6, 2026 NOTICE [2172136] to withdraw attorney Sopen B. Shah who represented Cato Institute, Chamber of Progress, Electronic Frontier Foundation, First Amendment Lawyers Association and Foundation for Individual Rights and Expression in 26-1049 filed by Cato Institute, Chamber of Progress, Electronic Frontier Foundation, First Amendment Lawyers Association and Foundation for Individual Rights and Expression [Service Date: 05/06/2026 ] [26-1049] (Shah, Sopen) [Entered: 05/06/2026 06:04 PM]
May 6, 2026 PER CURIAM ORDER [2172079] filed allocating oral argument time as follows: Petitioner - 15 Minutes, Respondents - 15 Minutes. One counsel per side to argue; directing party to file Form 72 notice of arguing attorney by 05/08/2026 [26-1049] [Entered: 05/06/2026 01:51 PM]
April 28, 2026 CORRECTED AMICUS FOR PETITIONER BRIEF [2170925] filed by Freedom Economy Business Association, Candide Group, Howard Fischer, Thomas Haslett, Humanize Wealth, Institute for Progress, Investor Advocates for Social Justice, Mission Driven Finance, John O'Farrell, Pluralize Capital, The Interfaith Center on Corporate Responsibility and The Nathan Cummings Foundation, Inc. American Federation of Teachers; Adasina Social Capital [Service Date: 04/28/2026 ] Length of Brief: 3,125 Words. [26-1049]--[Edited 04/29/2026 by EBL-Docket Text Modified] (Petrick, Josephine) [Entered: 04/28/2026 07:11 PM]
April 27, 2026 CORRECTED AMICUS FOR PETITIONER BRIEF [2170651] filed by Former Service Secretaries [Service Date: 04/27/2026 ] Length of Brief: 3,765 Words. [26-1049] (Harrington, Sarah) [Entered: 04/27/2026 05:57 PM]
April 23, 2026 CERTIFIED INDEX TO RECORD [2170179] filed by Peter B. Hegseth and United States Department of War [Service Date: 04/23/2026 ] [26-1049] (Janda, Sean) [Entered: 04/23/2026 06:00 PM]
April 23, 2026 AMICUS FOR RESPONDENT BRIEF [2170051] filed by JOEL THAYER, SENIOR FELLOW AT THE AMERICA FIRST POLICY INSTITUTE [Service Date: 04/23/2026 ] Length of Brief: 3,157 words. [26-1049] (Thayer, Joel) [Entered: 04/23/2026 01:04 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169929] filed by American Civil Liberties Union and Center for Democracy and Technology [Service Date: 04/22/2026 ] Length of Brief: 6,496 words. [26-1049] (Gorski, Ashley) [Entered: 04/22/2026 05:30 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169767] filed by Foundation for American Innovation, Fifty Years, Fathom, ChinaTalk, Martin Chorzempa, Alex Imas, Pangram, Institute for Progress, Dean Ball, Dwarkesh Patel, Roots of Progress and Saif Khan Michael Sobolik, Steve Newman, Taren Stinebrickner-Kauffman [Service Date: 04/22/2026 ] Length of Brief: 3,612 words. [26-1049] (Hwang, Tim) [Entered: 04/22/2026 09:48 AM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169853] filed by Taxpayers Protection Alliance Foundation [Service Date: 04/22/2026 ] Length of Brief: 3822 words. [26-1049] (Smith, Barbara) [Entered: 04/22/2026 01:35 PM]
April 22, 2026 ENTRY OF APPEARANCE [2169865] filed by Josephine K. Petrick on behalf of Amici Curiae for Petitioner Freedom Economy Business Association, The Nathan Cummings Foundation, Inc., Candide Group, Howard Fischer, Thomas Haslett, The Interfaith Center on Corporate Responsibility, Humanize Wealth, Investor Advocates for Social Justice, Pluralize Capital, Mission Driven Finance, John O'Farrell and Omidyar Network LLC. [26-1049] (Petrick, Josephine) [Entered: 04/22/2026 02:12 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169868] filed by Freedom Economy Business Association, Candide Group, Howard Fischer, Thomas Haslett, Humanize Wealth, Investor Advocates for Social Justice, Mission Driven Finance, John O'Farrell, Omidyar Network LLC, Pluralize Capital, The Interfaith Center on Corporate Responsibility and The Nathan Cummings Foundation, Inc. American Federation of Teachers; Adasina Social Capital [Service Date: 04/22/2026 ] Length of Brief: 3,125 words. [26-1049] (Petrick, Josephine) [Entered: 04/22/2026 02:23 PM]
April 22, 2026 AMICUS FOR PETITIONER FINAL BRIEF [2169900] filed by Catholic Moral Theologians and Ethicists Catholic Theologians and Ethicists [Service Date: 04/22/2026 ] Length of Brief: 2,605 words. [26-1049] (Klubes, Benjamin) [Entered: 04/22/2026 04:05 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169913] filed by Former Senior National Security Government Officials [Service Date: 04/22/2026 ] Length of Brief: 6,490 words. [26-1049] (Loeb, Alexis) [Entered: 04/22/2026 04:55 PM]
April 22, 2026 CONSENT NOTICE [2169923] of intention to participate as amicus curiae [Disclosure Listing: Attached] filed by Employees of Open AI and Google in Their Personal Capacities [Service Date: 04/22/2026 ] [26-1049] (Lev, Ori) [Entered: 04/22/2026 05:21 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169928] filed by Employees of OpenAI and Google in their personal capacities [Service Date: 04/22/2026 ] Length of Brief: 3,282 Words. [26-1049] (Lev, Ori) [Entered: 04/22/2026 05:29 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169931] filed by Former Service Secretaries [Service Date: 04/22/2026 ] Length of Brief: 3,776 Words. [26-1049] (Harrington, Sarah) [Entered: 04/22/2026 05:43 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169949] filed by ACT | The App Association [Service Date: 04/22/2026 ] Length of Brief: This brief complies with Fed. R. App. P. 29(a)(5) and 32(f) because it con-tains 2103 words, excluding the parts of the brief exempted by Fed. R. App. P. 32(f).. [26-1049] (Scarpelli, Brian) [Entered: 04/22/2026 06:44 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169965] filed by Foundation for Individual Rights and Expression, Cato Institute, First Amendment Lawyers Association, Electronic Frontier Foundation and Chamber of Progress [Service Date: 04/22/2026 ] Length of Brief: 5,566 words. [26-1049] (Shah, Sopen) [Entered: 04/22/2026 08:35 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169974] filed by Alan Z. Rozenshtein [Service Date: 04/22/2026 ] Length of Brief: 4,386 words. [26-1049] (Theodore, Elisabeth) [Entered: 04/22/2026 09:27 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169969] filed by Faith Family Technology Network [Service Date: 04/22/2026 ] Length of Brief: 3530 Words.. [26-1049] (Kilaru, Rakesh) [Entered: 04/22/2026 08:45 PM]
April 22, 2026 NOTICE [2169968] of intention to participate as amicus curiae [Disclosure Listing: Attached] filed by TechNet, Software & Information Industry Association, Computer & Communications Industry Association, Information Technology Industry Council [Service Date: 04/22/2026 ] [26-1049] (Wolff, Daniel) [Entered: 04/22/2026 08:45 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169972] filed by TechNet, Software & Information Industry Association, Computer & Communications Industry Association and Information Technology Industry Council [Service Date: 04/22/2026 ] Length of Brief: 5,961 words. [26-1049] (Wolff, Daniel) [Entered: 04/22/2026 09:04 PM]
April 22, 2026 AMICUS FOR PETITIONER BRIEF [2169958] filed by 149 Former Judges and Democracy Defenders Fund [Service Date: 04/22/2026 ] Length of Brief: 5592. [26-1049] (Costa, Gregg) [Entered: 04/22/2026 07:47 PM]
April 22, 2026 APPENDIX [2169955] filed by Anthropic PBC [Volumes: 4] [Service Date: 04/22/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 04/22/2026 07:11 PM]
April 22, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2169951] filed by Leon Panetta and the Institute for Security and Technology [Service Date: 04/22/2026 ] Length of Brief: 34 Pages. [26-1049] (Klapper, Matthew) [Entered: 04/22/2026 06:47 PM]
April 22, 2026 PETITIONER BRIEF [2169950] filed by Anthropic PBC [Service Date: 04/22/2026 ] Length of Brief: 12,890 words. [26-1049] (Dunbar, Kelly) [Entered: 04/22/2026 06:45 PM]
April 20, 2026 PER CURIAM ORDER [2169502] filed denying motion of James Lakner to participate as amicus curiae [2167990-2]. The Clerk is directed to note the docket accordingly. Before Judges: Henderson, Katsas and Rao. [26-1049] [Entered: 04/20/2026 02:48 PM]
April 8, 2026 PER ABOVE ORDER lodged Amicus brief [ # 2164233-2 ], Amicus brief [ # 2164156-2 ], Amicus brief [ # 2164145-2 ], Amicus brief [ # 2164098-2 ], Amicus brief [ # 2163924-2 ], Amicus brief [ # 2163914-2 ], Amicus brief [ # 2163300-2 ], Amicus brief [ # 2163215-2 ] is filed [26-1049] [Entered: 04/08/2026 05:34 PM]
April 8, 2026 PER CURIAM ORDER (with Per Curiam Statement attached) [2167684] filed granting motions to participate as amicus curiae [ # 2164155-2 ], [ # 2164113-2 ], [ # 2163923-2 ], [ # 2163913-2 ], [ # 2163907-2 ], granting motion to participate as amicus curiae [ # 2163901-2 ], [ # 2163273-2 ], [ # 2163178-2 ]; The Clerk is directed to file the lodged Amicus briefs [ # 2164233-2 ], [ # 2164156-2 ], [ # 2164145-2 ], [ # 2164098-2 ], [ # 2163924-2 ], [ # 2163914-2 ], [ # 2163300-2 ], [ # 2163215-2 ]; denying emergency motion for stay pending appeal [ # 2163176-2 ], setting briefing schedule: PETITIONER Brief due 04/22/2026. APPENDIX due 04/22/2026. Brief(s) of Amicus Curiae, if any, Supporting Petitioner due 04/22/2026. RESPONDENT Brief due on 05/06/2026. Briefs(s) of Amicus Curiae, if any, Supporting Respondents due 05/06/2026. PETITIONER Reply Brief due 05/13/2026 (SEE ORDER FOR DETAILS), scheduling oral argument on Tuesday, 05/19/2026. Before Judges: Henderson, Katsas and Rao. [26-1049] [Entered: 04/08/2026 05:31 PM]
April 8, 2026 STATEMENT OF INTENT REGARDING APPENDIX DEFERRAL [2167658] filed by Anthropic PBC [Service Date: 04/08/2026 ] Intent: AppxDeferred [26-1049] (Dunbar, Kelly) [Entered: 04/08/2026 03:42 PM]
April 8, 2026 UNDERLYING DECISION IN CASE [2167657] submitted by Anthropic PBC [Service Date: 04/08/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 04/08/2026 03:40 PM]
April 8, 2026 STATEMENT OF ISSUES [2167656] filed by Anthropic PBC [Service Date: 04/08/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 04/08/2026 03:38 PM]
April 8, 2026 CERTIFICATE AS TO PARTIES, RULINGS AND RELATED CASES [2167655] filed by Anthropic PBC [Service Date: 04/08/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 04/08/2026 03:34 PM]
April 8, 2026 DOCKETING STATEMENT [2167654] filed by Anthropic PBC [Service Date: 04/08/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 04/08/2026 03:32 PM]
April 6, 2026 [DENIED BY ORDER FILED 4/20/26] MOTION [2167990] to participate as amicus curiae combined with AMICUS FOR PETITIONER BRIEF lodged by James Lakner [Service Date: 04/02/2026] Length of Brief: 1 page. [26-1049] [Entered: 04/10/2026 11:41 AM]
March 26, 2026 LETTER [2165837] pursuant to FRAP 28j advising of additional authorities filed by Anthropic PBC [Service Date: 03/26/2026 ] [26-1049] (Dunbar, Kelly) [Entered: 03/26/2026 10:08 PM]
March 23, 2026 REPLY [2165167] filed by Anthropic PBC to response [Service Date: 03/23/2026 by CM/ECF NDA] Length Certification: 2,600 Words. [26-1049] (Dunbar, Kelly) [Entered: 03/23/2026 08:19 PM]
March 19, 2026 RESPONSE IN OPPOSITION [2164558] to motion [ # 2163176-2 ] filed by Peter B. Hegseth and United States Department of War [Service Date: 03/19/2026 by CM/ECF NDA] Length Certification: 5162 words. [26-1049] (Janda, Sean) [Entered: 03/19/2026 11:49 PM]
March 17, 2026 AMICUS FOR PETITIONER BRIEF [2164233] lodged by ACT | The App Association [Service Date: 03/17/2026 ] Length of Brief: 2,103 words. [26-1049] [Entered: 03/18/2026 01:05 PM]
March 17, 2026 AMICUS FOR PETITIONER BRIEF [2164156] lodged by 149 Former Judges and Democracy Defenders Fund [Service Date: 03/17/2026 ] Length of Brief: 4,224 words. [26-1049] [Edited 03/18/2026 by EKC--MODIFIED EVENT FROM FILED TO LODGED] (Brill, Sophia) [Entered: 03/17/2026 08:31 PM]
March 17, 2026 MOTION [2164155] to participate as amicus curiae [Disclosure Listing: Attached] filed by 149 Former Judges and Democracy Defenders Fund [Service Date: 03/17/2026 ] [26-1049] (Brill, Sophia) [Entered: 03/17/2026 08:14 PM]
March 17, 2026 CORRECTED AMICUS FOR PETITIONER BRIEF [2164145] lodged by Former Senior National Security Government Officials [Service Date: 03/17/2026 ] Length of Brief: 6,132 Words. [26-1049] [Edited 03/18/2026 by EKC--MODIFIED EVENT FROM FILED TO LODGED] (Loeb, Alexis) [Entered: 03/17/2026 05:55 PM]
March 17, 2026 MOTION [2164113] to participate as amicus curiae [Disclosure Listing: Attached] filed by ACT | The App Association [Service Date: 03/17/2026 ] [26-1049] (Scarpelli, Brian) [Entered: 03/17/2026 03:36 PM]
March 17, 2026 NOTICE [2164108] of intention to participate as amicus curiae [Disclosure Listing: Attached] filed by ACT | The App Association [Service Date: 03/17/2026 ] [26-1049] (Scarpelli, Brian) [Entered: 03/17/2026 03:25 PM]
March 16, 2026 MOTION [2163901] to participate as amicus curiae [Disclosure Listing: Attached] filed by Former Senior National Security Government Officials [Service Date: 03/16/2026 ] [26-1049] (Loeb, Alexis) [Entered: 03/16/2026 05:52 PM]
March 16, 2026 MOTION [2163913] to participate as amicus curiae [Disclosure Listing: Not Applicable to this Party] filed by Catholic Theologians and Ethicists [Service Date: 03/16/2026 ] [26-1049] (Klubes, Benjamin) [Entered: 03/16/2026 07:45 PM]
March 16, 2026 MOTION [2163907] to participate as amicus curiae [Disclosure Listing: Attached] filed by American Civil Liberties Union and Center for Democracy & Technology [Service Date: 03/16/2026 ] [26-1049] (Gorski, Ashley) [Entered: 03/16/2026 07:03 PM]
March 16, 2026 AMENDED AMICUS FOR PETITIONER BRIEF [2163912] filed by Freedom Economy Business Association [Service Date: 03/16/2026 ] Length of Brief: 2,449. [26-1049]--[Edited 03/17/2026 by EKC] (Harris, George) [Entered: 03/16/2026 07:32 PM]
March 16, 2026 AMICUS FOR PETITIONER BRIEF [2163908] lodged by Former Senior National Security Government Officials [Service Date: 03/16/2026 ] Length of Brief: 6,132 Words. [26-1049] [Edited 03/17/2026 by EKC--MODIFIED EVENT FROM FILED TO LODGED] (Loeb, Alexis) [Entered: 03/16/2026 07:10 PM]
March 16, 2026 AMICUS FOR PETITIONER BRIEF [2163914] lodged by Catholic Theologians and Ethicists [Service Date: 03/16/2026 ] Length of Brief: 2,580 words. [26-1049] [Edited 03/17/2026 by EKC--MODIFIED EVENT FROM FILED TO LODGED] (Klubes, Benjamin) [Entered: 03/16/2026 07:50 PM]
March 16, 2026 AMICUS FOR PETITIONER BRIEF [2163924] lodged by TechNet, Software & Information Industry Association, Computer & Communications Industry Association, Information Technology Industry Council [Service Date: 03/16/2026 ] Length of Brief: 2459 words. [26-1049] [Edited 03/17/2026 by EKC--MODIFIED EVENT FROM FILED TO LODGED] (Wolff, Daniel) [Entered: 03/16/2026 11:05 PM]
March 16, 2026 ENTRY OF APPEARANCE [2164097] filed by Ashley Gorski for American Civil Liberties Union and Center for Democracy and Technology and Patrick Toomey for American Civil Liberties Union and Center for Democracy and Technology. [26-1049] [Entered: 03/17/2026 03:15 PM]
March 16, 2026 AMICUS FOR PETITIONER BRIEF [2164098] lodged by American Civil Liberties Union and Center for Democracy and Technology [Service Date: 03/16/2026 ] Length of Brief: 6,486 words. [26-1049] [Entered: 03/17/2026 03:18 PM]
March 16, 2026 MOTION [2163923] to participate as amicus curiae [Disclosure Listing: Attached] filed by TechNet, Software & Information Industry Association, Computer & Communications Industry Association, Information Technology Industry Council [Service Date: 03/16/2026 ] [26-1049] (Wolff, Daniel) [Entered: 03/16/2026 11:02 PM]
March 13, 2026 CONSENT NOTICE [2163584] of intention to participate as amicus curiae [Disclosure Listing: Not Applicable to this Party] filed by Professor Alan Z. Rozenshtein [Service Date: 03/13/2026 ] [26-1049] (Theodore, Elisabeth) [Entered: 03/13/2026 03:50 PM]
March 13, 2026 CONSENT AMICUS FOR PETITIONER BRIEF [2163420] filed by Employees of OpenAI and Google in Their Personal Capacities [Service Date: 03/13/2026 ] Length of Brief: 3,282. [26-1049] (Lev, Ori) [Entered: 03/13/2026 09:28 AM]
March 13, 2026 PER CURIAM ORDER [2163428] filed ORDERED that respondents file a response to the emergency motion for a stay [ # 2163176-2 ] by March 19, 2026. Petitioners reply is due by March 23, 2026. Before Judges: Wilkins, Katsas and Rao. [26-1049] [Entered: 03/13/2026 09:42 AM]
March 13, 2026 AMICUS FOR PETITIONER BRIEF [2163588] filed by Professor Alan Z. Rozenshtein [Service Date: 03/13/2026 ] Length of Brief: 4,383 Words. [26-1049] (Theodore, Elisabeth) [Entered: 03/13/2026 03:54 PM]
March 13, 2026 AMICUS FOR PETITIONER BRIEF [2163623] filed by Freedom Economy Business Association [Service Date: 03/13/2026 ] Length of Brief: 2,449. [26-1049] (Harris, George) [Entered: 03/13/2026 11:56 PM]
March 13, 2026 ENTRY OF APPEARANCE [2163740] filed by Mr. George C. Harris for Freedom Economy Business Association, Candide Group, Howard Fischer, Thomas Haslett, Investor Advocates for Social Justice, Mission Driven Finance, The Nathan Cummings Foundation, Inc., Omidyar Network LLC and Pluralize Capital. [26-1049] [Entered: 03/16/2026 10:44 AM]
March 12, 2026 AMICUS FOR PETITIONER BRIEF [2163373] filed by Foundation for Individual Rights and Expression, Electronic Frontier Foundation, Cato Institute, Chamber of Progress, and First Amendment Lawyers Association [Service Date: 03/12/2026 ] Length of Brief: 5,151 words. [26-1049] (Shah, Sopen) [Entered: 03/12/2026 09:38 PM]
March 12, 2026 CONSENT NOTICE [2163366] of intention to participate as amicus curiae [Disclosure Listing: Attached] filed by Employees of Open AI and Google in Their Personal Capacities [Service Date: 03/12/2026 ] [26-1049] (Lev, Ori) [Entered: 03/12/2026 07:18 PM]
March 12, 2026 AMICUS FOR PETITIONER BRIEF [2163300] lodged by Former Service Secretaries and Retired Senior Military Officers [Service Date: 03/12/2026 ] Length of Brief: 3,755 words. [26-1049] [Entered: 03/12/2026 02:41 PM]
March 12, 2026 MOTION [2163273] to participate as amicus curiae [Disclosure Listing: Not Applicable to this Party] filed by Former Service Secretaries and Retired Senior Military Officers [Service Date: 03/12/2026 ] [26-1049] (Harrington, Sarah) [Entered: 03/12/2026 01:38 PM]
March 12, 2026 AMICUS FOR PETITIONER BRIEF [2163215] lodged by Dean Ball, ChinaTalk, Martin Chorzempa, Fathom, Fifty Years, Foundation for American Innovation, Alex Imas, Institute for Progress, Saif Khan, Pangram, Dwarkesh Patel and Roots of Progress [Service Date: 03/12/2026 ] Length of Brief: 3,541 words. [26-1049] [Entered: 03/12/2026 10:31 AM]
March 12, 2026 MOTION [2163178] to participate as amicus curiae [Disclosure Listing: Attached] filed by Foundation for American Innovation, Fifty Years, Fathom, ChinaTalk, Martin Chorzempa, Alex Imas, Pangram, Institute for Progress, Dean Ball, Dwarkesh Patel, Roots of Progress, Saif Khan [Service Date: 03/12/2026 ] [26-1049] (Hwang, Tim) [Entered: 03/12/2026 12:38 AM]
March 11, 2026 EMERGENCY MOTION [2163176] to stay underlying order pending appeal filed by Anthropic PBC (Service Date: 03/11/2026 by CM/ECF NDA) Length Certification: 5,188 Words. [26-1049] (Dunbar, Kelly) [Entered: 03/11/2026 11:15 PM]
March 10, 2026 ENTRY OF APPEARANCE [2163025] filed by Sharon Swingle and co-counsel Sean R. Janda; Brian J. Springer on behalf of Respondents Peter B. Hegseth and United States Department of War. [26-1049] (Janda, Sean) [Entered: 03/10/2026 06:02 PM]
March 9, 2026 CERTIFIED COPY [2162688] of Petition for Review sent to respondent [ # 2162687-2 ]. [26-1049] [Entered: 03/09/2026 12:28 PM]
March 9, 2026 PETITION FOR REVIEW [2162687] of a decision by federal agency filed by Anthropic PBC [Service Date: 03/09/2026] Disclosure Statement: Attached. [26-1049] [Entered: 03/09/2026 12:27 PM]
March 9, 2026 CLERK'S ORDER [2162695] filed directing the parties to file initial submissions: PETITIONER docketing statement due 04/08/2026. PETITIONER certificate as to parties due 04/08/2026. PETITIONER statement of issues due 04/08/2026. PETITIONER underlying decision due 04/08/2026. PETITIONER deferred appendix statement due 04/08/2026. PETITIONER procedural motions due 04/08/2026. PETITIONER dispositive motions due 04/23/2026. RESPONDENT entry of appearance due 04/08/2026. RESPONDENT procedural motions due 04/08/2026. RESPONDENT certified index to record due 04/23/2026. RESPONDENT dispositive motions due 04/23/2026 [26-1049] [Entered: 03/09/2026 12:43 PM]
March 9, 2026 PETITION FOR REVIEW CASE docketed. [26-1049] [Entered: 03/09/2026 12:26 PM]

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Search for this case: Anthropic PBC v. United States Department of War, et al
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Petitioner: Anthropic PBC
Represented By: Kevin Matthew Lamb
Represented By: Joshua Alexander Geltzer
Represented By: Anneke F. Dunbar-Gronke
Represented By: Kelly Patrick Dunbar
Represented By: Megan Gardner
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Respondent: United States Department of War
Represented By: Brian James Springer
Represented By: Sean R. Janda
Represented By: Sharon Swingle
Represented By: Brett A. Shumate
Represented By: Eric Dean McArthur Esquire
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Respondent: Peter B. Hegseth, in his official capacity as Secretary of War
Represented By: Brian James Springer
Represented By: Sean R. Janda
Represented By: Sharon Swingle
Represented By: Brett A. Shumate
Represented By: Eric Dean McArthur Esquire
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Amicus curiae: Employees of OpenAI and Google in their personal capacities
Represented By: Ori Lev
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Amicus curiae: Joel Thayer, Senior Fellow at the America First Policy Institute
Represented By: Andrew Zimmitti
Represented By: Joel Thayer
Represented By: Gina D'Andrea
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Amicus curiae: Foundation for Individual Rights and Expression
Represented By: Sarah Grant
Represented By: Addison Bennett
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Amicus curiae: Electronic Frontier Foundation
Represented By: Sarah Grant
Represented By: Addison Bennett
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Amicus curiae: Cato Institute
Represented By: Sarah Grant
Represented By: Addison Bennett
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Amicus curiae: Chamber of Progress
Represented By: Sarah Grant
Represented By: Addison Bennett
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Amicus curiae: First Amendment Lawyers Association
Represented By: Sarah Grant
Represented By: Addison Bennett
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Amicus curiae: Alan Z. Rozenshtein
Represented By: Aaron Sobel
Represented By: Benjamin C. Mizer
Represented By: Samuel Callahan
Represented By: Elisabeth Susan Theodore
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Amicus curiae: Freedom Economy Business Association
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Candide Group
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Howard Fischer
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Thomas Haslett
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Investor Advocates for Social Justice
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Mission Driven Finance
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: The Nathan Cummings Foundation, Inc.
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Omidyar Network LLC
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Pluralize Capital
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: The Interfaith Center on Corporate Responsibility
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: Humanize Wealth
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: John O'Farrell
Represented By: Josephine Kendra Petrick
Represented By: George C. Harris
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Amicus curiae: 149 Former Judges
Represented By: Norman Larry Eisen
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Amicus curiae: ACT | The App Association
Represented By: Brian Scarpelli
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Amicus curiae: American Civil Liberties Union
Represented By: Patrick Toomey
Represented By: Ashley Gorski
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Amicus curiae: Dean Ball
Represented By: Tim Ren Hwang
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Amicus curiae: Catholic Moral Theologians and Ethicists
Represented By: Benjamin Barnet Klubes
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Amicus curiae: Center for Democracy and Technology
Represented By: Patrick Toomey
Represented By: Ashley Gorski
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Amicus curiae: ChinaTalk
Represented By: Tim Ren Hwang
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Amicus curiae: Martin Chorzempa
Represented By: Tim Ren Hwang
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Amicus curiae: Computer & Communications Industry Association
Represented By: Daniel William Wolff
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Amicus curiae: Democracy Defenders Fund
Represented By: Connor Philip Mui
Represented By: Gregg Costa
Represented By: Sophia M. Brill
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Amicus curiae: Fathom
Represented By: Tim Ren Hwang
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Amicus curiae: Taxpayers Protection Alliance Foundation
Represented By: Barbara Anne Smith
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Amicus curiae: Fifty Years
Represented By: Tim Ren Hwang
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Amicus curiae: Former Senior National Security Government Officials
Represented By: John M. Ugai
Represented By: Anthony P. Schoenberg Esquire
Represented By: Alexis Loeb
Represented By: Harold Hongju Koh
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Amicus curiae: Former Service Secretaries
Represented By: David Meir Zionts
Represented By: Mishi Jain
Represented By: Megan Crowley
Represented By: Alexander A. Berengaut
Represented By: Sarah Elaine Harrington
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Amicus curiae: Leon E. Panetta, Former Secretary of Defense
Represented By: Elizabeth B. Deutsch
Represented By: Matthew Bennett Klapper
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Amicus curiae: Foundation for American Innovation
Represented By: Tim Ren Hwang
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Amicus curiae: Institute for Security and Technology
Represented By: Elizabeth B. Deutsch
Represented By: Matthew Bennett Klapper
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Amicus curiae: Alex Imas
Represented By: Tim Ren Hwang
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Amicus curiae: Faith Family Technology Network
Represented By: Rakesh Kilaru
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Amicus curiae: Information Technology Industry Council
Represented By: Daniel William Wolff
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Amicus curiae: Institute for Progress
Represented By: Tim Ren Hwang
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Amicus curiae: Saif Khan
Represented By: Tim Ren Hwang
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Amicus curiae: Pangram
Represented By: Tim Ren Hwang
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Amicus curiae: Dwarkesh Patel
Represented By: Tim Ren Hwang
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Amicus curiae: Retired Senior Military Officers
Represented By: David Meir Zionts
Represented By: Mishi Jain
Represented By: Megan Crowley
Represented By: Alexander A. Berengaut
Represented By: Sarah Elaine Harrington
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Amicus curiae: Roots of Progress
Represented By: Tim Ren Hwang
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Amicus curiae: Software & Information Industry Association
Represented By: Daniel William Wolff
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Amicus curiae: TechNet
Represented By: Daniel William Wolff
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Amicus curiae: James Lakner
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