Callista Corporation v. Internal Revenue Service et al
Plaintiff: Callista Corporation
Defendant: Internal Revenue Service and USA
Case Number: 1:2026cv00083
Filed: January 8, 2026
Court: U.S. District Court for the District of Colorado
Presiding Judge: S Kato Crews
Referring Judge: Kathryn A Starnella
Nature of Suit: Tax Suits
Cause of Action: 26 U.S.C. § 6532 IRS: Refund of Tax Penalty
Jury Demanded By: None
Docket Report

This docket was last retrieved on June 15, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
June 15, 2026 Filing 23 REPLY to Response to #16 MOTION to Dismiss for Lack of Jurisdiction MOTION to Dismiss for Failure to State a Claim filed by Defendants Internal Revenue Service, USA. (Iozzo, Anthony)
June 1, 2026 Filing 22 RESPONSE to #16 MOTION to Dismiss for Lack of Jurisdiction MOTION to Dismiss for Failure to State a Claim filed by Plaintiff Callista Corporation. (Diosdi, Anthony)
May 18, 2026 Opinion or Order Filing 21 MINUTE ORDER. IT IS HEREBY ORDERED that the Motion [#19 ] is GRANTED. Discovery in this matter is STAYED pending further order of the Court. IT IS FURTHER ORDERED that the parties shall file a joint motion to amend the Scheduling Order [#17 ], with proposed amendments to deadlines set in this case, within 14 days of the District Judge's ruling on the Motion to Dismiss [#16 ], if the ruling does not completely dispose of the case. Entered by Magistrate Judge Kathryn A. Starnella on 5/18/2026. (anewt,)
May 15, 2026 Opinion or Order Filing 20 MEMORANDUM regarding #19 Joint MOTION to Stay re #17 Scheduling Order, #16 MOTION to Dismiss for Lack of Jurisdiction MOTION to Dismiss for Failure to State a Claim filed by Internal Revenue Service, USA. Motion referred to Magistrate Judge Kathryn A. Starnella. By Judge S. Kato Crews on 5/15/2026. Text Only Entry (skcja, )
May 14, 2026 Filing 19 Joint MOTION to Stay re #17 Scheduling Order, #16 MOTION to Dismiss for Lack of Jurisdiction MOTION to Dismiss for Failure to State a Claim by Defendants Internal Revenue Service, USA. (Attachments: #1 Proposed Order (PDF Only))(Iozzo, Anthony)
May 12, 2026 Opinion or Order Filing 18 MINUTE ORDER by Magistrate Judge Kathryn A. Starnella on 5/12/26. Pursuant to the entry of #17 Scheduling Order, the Scheduling Conference set for 5/13/26 is hereby VACATED. Counsel are ordered to refer to Judge Crews' Practice Standards to obtain future court dates. Text Only Entry (lgale, )
May 12, 2026 Opinion or Order Filing 17 SCHEDULING ORDER by Magistrate Judge Kathryn A. Starnella on 5/12/26. Designation of Affirmative Experts due 11/13/2026. Designation of Rebuttal Experts due 12/18/2026. Discovery due by 5/14/2027. (lgale, )
May 11, 2026 Filing 16 MOTION to Dismiss for Lack of Jurisdiction , MOTION to Dismiss for Failure to State a Claim by Defendants Internal Revenue Service, USA. (Attachments: #1 Exhibit Exhibit A, #2 Exhibit Exhibit B, #3 Exhibit Exhibit C)(Iozzo, Anthony)
May 6, 2026 Filing 15 Proposed Scheduling Order Joint by Plaintiff Callista Corporation. (Diosdi, Anthony)
May 5, 2026 Filing 14 NOTICE of Entry of Appearance of Anthony J. Iozzo by Anthony J. Iozzo on behalf of Internal Revenue Service, USA (Iozzo, Anthony)
March 5, 2026 Opinion or Order Filing 13 ORDER REFERRING CASE to Magistrate Judge Kathryn A. Starnella for non-dispositive matters. Pursuant to 28 U.S.C. 636(b)(1)(A) and (B) and Fed. R. Civ. P. 72(a) and (b), this case is referred to the assigned United States Magistrate Judge to (1) convene a scheduling conference under Fed. R. Civ. P. 16(b) and enter a scheduling order meeting the requirements of D.C.COLO.LCivR 16.2, (2) conduct such status conferences and issue such orders necessary for compliance with the scheduling order, including amendments or modifications of the scheduling order upon a showing of good cause, and (3) hear and determine pretrial matters, including discovery and other non-dispositive motions. Court-sponsored alternative dispute resolution is governed by D.C.COLO.LCivR 16.6. On the request of the parties by motion, this Court may direct the parties to engage in an early neutral evaluation, a settlement conference, or another alternative dispute resolution proceeding. Alternatively, the Magistrate Judge, at their discretion, may convene such early neutral evaluation and/or settlement conferences and direct related procedures as may facilitate resolution of this case without the necessity of a motion or prior authorization of the undersigned. Counsel for the Parties and all counsel who may later enter an appearance shall review and familiarize themselves with the undersigned's Standing Order and Practice Standards, as well as the Practice Standards of the assigned Magistrate Judge. By Judge S. Kato Crews on 3/5/2026. Text Only Entry (skcja, )
March 4, 2026 Filing 12 MEMORANDUM. Case reassigned to Judge S. Kato Crews for all further proceedings. All future pleadings should be designated as 26-cv-00083-SKC. (jrobe, )
March 3, 2026 Opinion or Order Filing 11 MINUTE ORDER by Magistrate Judge Kathryn A. Starnella on 3 March 2026. This matter is before the Court on the Election Concerning Consent/Non-Consent to United States Magistrate Judge Jurisdiction [#10 ] (the "Consent/Non-Consent Form"). This case was assigned to a United States Magistrate Judge pursuant to D.C.COLO.LCivR 40.1(c). The signed Consent/Non-Consent Form [#10 ] indicates that at least one party has declined to consent. Accordingly IT IS HEREBY ORDERED that this case shall be assigned to a District Judge under D.C.COLO.LCivR 40.1(c)(8) and D.C.COLO.LCivR 40.1(a). (Case randomly reassigned to Judge William J. Martinez and drawn to Magistrate Judge Kathryn A. Starnella for all further proceedings. All future pleadings should be designated as 26-cv-00083-WJM). (amona,)
March 3, 2026 Filing 10 CONSENT to Jurisdiction of Magistrate Judge by Plaintiff Callista Corporation All parties do not consent.. (Diosdi, Anthony)
March 2, 2026 Opinion or Order Filing 9 MINUTE ORDER by Magistrate Judge Kathryn A. Starnella on 2 March 2026. This matter is before the Court on Defendant United States' Unopposed Motion for Extension of Time to Respond to the Complaint and Reset Scheduling Conference and Related Deadline [#8 ] (the "Motion"). For good cause shown, IT IS HEREBY ORDERED that the Motion [#8 ] is GRANTED. Defendant United States shall answer or otherwise respond to Plaintiff's complaint no later than May 11, 2026. IT IS FURTHER ORDERED that the Scheduling Conference set for April 14, 2026, at 10:30 a.m. is VACATED and RESET to May 13, 2026, at 11:30 a.m. in Courtroom A-501, Fifth Floor, Alfred A. Arraj United States Courthouse, 901 19th Street, Denver, Colorado 80294. IT IS FURTHER ORDERED that, no later than May 6, 2026, the parties shall submit their proposed scheduling order, pursuant to District of Colorado Electronic Case Filing ("ECF") Procedures. IT IS FURTHER ORDERED that the deadline to file the Election Concerning Consent/Non-Consent to United States Magistrate Judge Jurisdiction [#3 -1] is extended to April 29, 2026. (amona,)
February 27, 2026 Filing 8 Unopposed MOTION for Extension of Time to File Answer or Otherwise Respond re #1 Complaint, by Defendants Internal Revenue Service, USA. (Attachments: #1 Proposed Order (PDF Only))(Iozzo, Anthony)
January 16, 2026 Filing 7 SUMMONS Returned Executed upon defendant(s) Internal Revenue Service served on 1/9/2026, answer due 3/10/2026; USA served on 1/9/2026, answer due 3/10/2026. (Diosdi, Anthony)
January 12, 2026 Opinion or Order Filing 6 PRE-SCHEDULING CONFERENCE ORDER by Magistrate Judge Kathryn A. Starnella on 12 January 2026. (cmadr, )
January 12, 2026 Opinion or Order Filing 5 ORDER SETTING SCHEDULING/PLANNING CONFERENCE by Magistrate Judge Kathryn A. Starnella on 12 January 2026. Proposed Scheduling Order due 4/7/2026. Scheduling Conference set for 4/14/2026 10:30 AM in Courtroom A 501 before Magistrate Judge Kathryn A. Starnella. (Attachments: #1 Continuation of Main Document, #2 Continuation of Main Document) (cmadr, )
January 12, 2026 Opinion or Order Filing 4 MINUTE ORDER. Pursuant to D.C.COLO.LCivR 40.1(c)(4), the deadline to file the Consent/Non-Consent to United States Magistrate Judge Jurisdiction form [#3-1] is March 31, 2026. By Magistrate Judge Kathryn A. Starnella on January 12, 2026. Text Only Entry (kaslc8, )
January 8, 2026 Filing 3 SUMMONS issued by Clerk. (Attachments: #1 Magistrate Judge Consent Form) (eguth, )
January 8, 2026 Filing 2 Case assigned to Magistrate Judge Kathryn A. Starnella. Text Only Entry (eguth, )
January 8, 2026 Filing 1 COMPLAINT Against All Defendants against All Plaintiffs (Filing fee $ 405,Receipt Number ACODC-10752214)Attorney Anthony V. Diosdi added to party CALLISTA CORPORATION(pty:pla), filed by CALLISTA CORPORATION. (Attachments: #1 Exhibit A, #2 Civil Cover Sheet, #3 Summons)(Diosdi, Anthony)

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Plaintiff: Callista Corporation
Represented By: Anthony V. Diosdi
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Defendant: Internal Revenue Service
Represented By: Anthony J. Iozzo
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Defendant: USA
Represented By: Anthony J. Iozzo
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