Matterhorn Express Pipeline, L.L.C. v. FERC
| Matterhorn Express Pipeline, L.L.C. |
| Federal Energy Regulatory Commission |
| Texas Pipeline Association and Energy Transfer, L.P. |
| 26-60051 |
| January 29, 2026 |
| U.S. Court of Appeals, Fifth Circuit |
| Other |
Docket Report
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This docket was last retrieved on July 27, 2026. A more recent docket listing may be available from PACER.
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| Filing 44 CLERK ORDER granting Motion to withdraw as counsel filed by Mr. John Houston Shaner [ # 39 ] [25-60487, 26-60051] (SH) [Entered: 07/27/2026 11:35 AM] |
| Filing 43 COURT ACTION withdrawing Appellee Brief filed by Respondent FERC [ # 25 ] [25-60487, 26-60051] (SH) [Entered: 07/27/2026 11:31 AM] |
| Filing 42 CORRECTED RESPONDENT'S BRIEF filed. [25-60487, 26-60051] (SH) [Entered: 07/27/2026 11:29 AM] |
| Filing 41 CLERK ORDER granting Motion to file corrected brief filed by Respondent FERC [ # 34 ] [25-60487, 26-60051] (SH) [Entered: 07/27/2026 11:16 AM] |
| Filing 39 MOTION to withdraw as counsel [39]. Date of Service: 07/24/2026 [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: MOTION filed by Attorney Mr. John Houston Shaner for Respondent FERC in 25-60487, 26-60051 to withdraw as counsel [39]. Date of Service: 07/24/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers [25-60487, 26-60051] (John Houston Shaner ) [Entered: 07/24/2026 09:36 AM] |
| Filing 35 ADDENDUM TO BRIEF MADE SUFFICIENT filed by Respondent FERC in 25-60487, 26-60051 [ # 30 ]. Sufficient Addendum to Brief deadline satisfied [25-60487, 26-60051] (SH) [Entered: 07/22/2026 02:38 PM] |
| Filing 34 MOTION to file corrected brief [34]. Date of service: 07/22/2026 [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: MOTION filed by Respondent FERC in 25-60487 to file corrected brief [34]. Date of service: 07/22/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Samuel Graves Backfield ) [Entered: 07/22/2026 02:15 PM] |
| Filing 32 APPENDIX FILED. Appendix deadline satisfied [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: APPENDIX FILED by Petitioner Matterhorn Express Pipeline, L.L.C. in 25-60487, 26-60051 Date of Service: 07/13/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Z.W. Julius Chen ) [Entered: 07/13/2026 06:46 PM] |
| Filing 31 APPELLANT'S REPLY BRIEF FILED. Reply Brief deadline satisfied [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: APPELLANT'S REPLY BRIEF FILED by Matterhorn Express Pipeline, L.L.C. in 25-60487, 26-60051. Date of service: 07/13/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Z.W. Julius Chen ) [Entered: 07/13/2026 06:45 PM] |
| Filing 30 SUFFICIENT ADDENDUM TO BRIEF FILED. Number of Pages: 37. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: ADDENDUM TO BRIEF FILED Number of Pages: 43. Sufficient Addendum to Brief due 06/29/2026. Addendums to briefs may only include statues, rules,a nd regulations. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: ADDENDUM TO BRIEF FILED by Respondent FERC in 25-60487, 26-60051 Date of Service: 06/18/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers [25-60487, 26-60051] (John Houston Shaner ) [Entered: 06/18/2026 07:13 AM] |
| Filing 29 LETTER filed containing Respondent's Corrected Respondent's Brief in 25-60487, 26-60051 [ # 25 ].[25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: LETTER filed by Respondent FERC in 25-60487, 26-60051 submitting proposed corrected brief. Date of Service: 06/18/2026 via email - Attorney for Respondents: Backfield, Shaner, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers [25-60487, 26-60051] (John Houston Shaner ) [Entered: 06/18/2026 07:09 AM] |
| Filing 27 APPEARANCE FORM FILED by Attorney(s) John Houston Shaner for party(s) Respondent FERC, in case 25-60487, Attorney(s) John Houston Shaner for party(s) Respondent FERC, in case 26-60051. [25-60487, 26-60051] (SEP) [Entered: 06/17/2026 12:08 PM] |
| Filing 26 APPEARANCE FORM for the court's review. Lead Counsel? No. [25-60487, 26-60051] (John Houston Shaner ) [Entered: 06/17/2026 08:57 AM] |
| Filing 25 (BRIEF WITHDRAWN - CORRECTED BRIEF FILED) CORRECTED APPELLEE'S BRIEF FILED [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: APPELLEE'S BRIEF FILED. E/Res's Brief deadline satisfied. Reply Brief due on 07/13/2026 for Petitioner Matterhorn Express Pipeline, L.L.C.. Appendix due on 07/13/2026 for Petitioner Matterhorn Express Pipeline, L.L.C.. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: APPELLEE'S BRIEF FILED by FERC in 25-60487. Date of service: 06/12/2026 via email - Attorney for Respondents: Backfield, Solomon; Attorney for Petitioners: Chen, Rusconi; Attorney for Amici Curiae: Heidler, Kleven, O'Neill, Seegers; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Samuel Graves Backfield ) [Entered: 06/12/2026 07:47 PM] |
| Filing 23 APPEARANCE FORM FILED by Attorney(s) James Douglas Seegers for party(s) Amicus Curiae Energy Transfer, L.P., in case 26-60051 [25-60487, 26-60051] (SH) [Entered: 04/22/2026 09:47 AM] |
| Filing 22 APPEARANCE FORM FILED by Attorney(s) Adam Kleven for party(s) Amicus Curiae Energy Transfer, L.P., in case 26-60051 [25-60487, 26-60051] (SH) [Entered: 04/22/2026 09:45 AM] |
| Filing 21 APPEARANCE FORM FILED by Attorney Michael A. Heidler for Amicus Curiae Energy Transfer, L.P. in 25-60487 [25-60487, 26-60051] (SH) [Entered: 04/22/2026 09:43 AM] |
| Filing 20 AMICUS CURIAE BRIEF FILED by Energy Transfer, L.P. in 25-60487, 26-60051. The Consent is Included in the Brief. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: AMICUS CURIAE BRIEF FILED by Energy Transfer LP. Date of service: 04/20/2026 via email - Attorney for Respondents: Backfield, Reese, Solomon; Attorney for Petitioners: Chen, Rusconi [25-60487, 26-60051] (Michael A. Heidler ) [Entered: 04/20/2026 11:50 AM] |
| Filing 19 APPEARANCE FORM for the court's review. Lead Counsel? No. [25-60487, 26-60051] (James Douglas Seegers ) [Entered: 04/20/2026 10:06 AM] |
| Filing 18 APPEARANCE FORM for the court's review. Lead Counsel? No. [25-60487, 26-60051] (Adam Kleven ) [Entered: 04/20/2026 09:00 AM] |
| Filing 17 APPEARANCE FORM for the court's review. Lead Counsel? Yes. [25-60487, 26-60051] (Michael A. Heidler ) [Entered: 04/20/2026 08:51 AM] |
| Filing 16 AMICUS CURIAE BRIEF FILED by Texas Pipeline Association in 26-60051, 25-60487. The Consent is Included in the Brief. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: AMICUS CURIAE BRIEF FILED by Texas Pipeline Association. Date of service: 04/18/2026 via email - Attorney for Respondents: Backfield, Reese, Solomon; Attorney for Petitioners: Chen, Rusconi [25-60487, 26-60051] (Jennifer O'Neill ) [Entered: 04/18/2026 09:38 AM] |
| Filing 15 PETITIONER'S BRIEF FILED A/Pet's Brief deadline satisfied. Respondent's Brief due on 06/12/2026 for Respondent Federal Energy Regulatory Commission [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: APPELLANT'S BRIEF FILED by Matterhorn Express Pipeline, L.L.C. in 25-60487, 26-60051. Date of service: 04/13/2026 via email - Attorney for Respondents: Backfield, Solomon; Attorney for Petitioners: Chen, Rusconi; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Z.W. Julius Chen ) [Entered: 04/13/2026 05:39 PM] |
| Filing 14 BRIEFING NOTICE ISSUED. A/Pet's Brief Due on 04/13/2026 for Petitioner Matterhorn Express Pipeline, L.L.C.. [25-60487, 26-60051] (SH) [Entered: 02/20/2026 02:09 PM] |
| Filing 13 Certified List FILED in lieu of record.Administrative record deadline satisfied. [25-60487, 26-60051] (SH) [Entered: 02/20/2026 01:04 PM] |
| Filing 12 DOCKETING STATEMENT FILED Docket Statement deadline satisfied. [25-60487, 26-60051] REVIEWED AND/OR EDITED - The original text prior to review appeared as follows: DOCKETING STATEMENT FILED by Petitioner Matterhorn Express Pipeline, L.L.C. in 25-60487, 26-60051. Date of Service: 02/13/2026 via email - Attorney for Respondents: Backfield, Solomon; Attorney for Petitioners: Chen, Rusconi; US mail - Attorney for Respondent: Reese [25-60487, 26-60051] (Z.W. Julius Chen ) [Entered: 02/13/2026 02:05 PM] |
| Filing 11 CERTIFIED LIST filed. Date of Service: 02/12/2026 via email - Attorney for Respondents: Backfield, Reese, Solomon; Attorney for Petitioners: Chen, Rusconi [25-60487, 26-60051] (Samuel Graves Backfield ) [Entered: 02/12/2026 02:16 PM] |
| Filing 10 ADMINISTRATIVE RECORD CORRECTION REQUIRED. The filing of the administrative record has been deleted and must be refiled. Corrections Required: an incorrect filing event was used to file the certified list. Please re-file the certified list using this event: cer lst f. [25-60487, 26-60051] (DDL) [Entered: 02/12/2026 02:10 PM] |
| Filing 5 COURT ORDER granting Motion to consolidate cases filed by Petitioner Matterhorn Express Pipeline, L.L.C. [ # 10769240-2 ] in 25-60487; granting Motion establish briefing notice filed by Petitioner Matterhorn Express Pipeline, L.L.C. [ # 10769240-3 ] in 25-60487; granting Motion to direct the Respondent to file the administrative record within seven days filed by Petitioner Matterhorn Express Pipeline, L.L.C. [ # 10769240-4 ] in 25-60487 [25-60487, 26-60051] (SH) [Entered: 02/05/2026 11:11 AM] |
| Filing 4 INITIAL CASE CHECK by Attorney Advisor complete. Action: Case OK to Process. [4] Initial AA Check Due satisfied. [26-60051] (SH) [Entered: 02/04/2026 01:56 PM] |
| Filing 1 AGENCY CASE docketed. Petition for review filed by Petitioner Matterhorn Express Pipeline, L.L.C.. Date received in 5th Circuit: 01/23/2026. Docket Statement due on 03/02/2026 for Petitioner Matterhorn Express Pipeline, L.L.C.. Administrative Record due on 03/10/2026 [26-60051] (RAJ) [Entered: 01/29/2026 02:42 PM] |
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