Masimo Corporation v. Politan Capital Management, LP, et al.
Plaintiff: MASIMO CORPORATION
Defendant: POLITAN CAPITAL MANAGEMENT, LP, a Delaware limited partnership, POLITAN CAPITAL MANAGEMENT GP LLC, a Delaware limited liability company, POLITAN CAPITAL PARTNERS GP LLC, a Delaware limited liability company, POLITAN CAPITAL NY LLC, NewYork limited liability company, POLITAN INTERMEDIATE LTD., POLITAN CAPITAL PARTNERS MASTER FUND LP, POLITCAN CAPITAL PARTNERS LP, a Delaware limited partnership, POLITAN CAPITAL OFFSHORE PARTNERS LP, QUENTIN KOFFEY, MICHELLE BRENNAN, MATTHEW HALL, AARON KAPITO, WILLIAM JELLISON and DARLENE SOLOMON
Case Number: 25-1621
Filed: March 12, 2025
Court: U.S. Court of Appeals, Ninth Circuit
Nature of Suit: Other
Docket Report

This docket was last retrieved on July 2, 2025. A more recent docket listing may be available from PACER.

Date Filed Document Text
July 2, 2025 Opinion or Order Filing 17 ORDER FILED. The motion (Docket Entry No. 16) for voluntary dismissal is granted. See Fed. R. App. P. 42(b). This case is dismissed. This order serves as the mandate of the court. [Entered: 07/02/2025 12:03 PM]
June 27, 2025 Filing 16 MOTION to Dismiss filed by Appellant Politan Capital Management, LP. [Entered: 06/27/2025 04:18 PM]
May 16, 2025 Filing 15 Attorney Jeremy White Stamelman as Counsel for Appellee substituted for Attorney Bradley Edward Marrett. [Entered: 05/16/2025 01:39 PM]
May 16, 2025 Opinion or Order Filing 14 ORDER FILED. Streamlined Request for Extension of Time to File Brief (DE 12) granted. Amended briefing schedule: Opening Brief Due (Appellant) 6/27/2025, Answering Brief Due (Appellee) 7/28/2025. Optional Reply Brief due 21 days after service of Answering Brief. All briefs shall be served and filed pursuant to FRAP 31 and 9th Cir. R. 31-2.1. [Entered: 05/16/2025 01:17 PM]
May 16, 2025 Filing 13 NOTICE OF APPEARANCE by Jeremy White Stamelman for Appellee Masimo Corporation replacing Bradley Edward Marrett. [Entered: 05/16/2025 12:36 PM]
May 16, 2025 Filing 12 Streamlined Request for Extension of Time to File Brief filed by Appellant Politan Capital Management, LP. [Entered: 05/16/2025 10:59 AM]
April 1, 2025 Filing 11 RELEASED FROM MEDIATION (text only). This case is released from the Mediation Program. [Entered: 04/01/2025 04:05 PM]
March 26, 2025 Filing 10 DISCLOSURE STATEMENT pursuant to FRAP 26.1 and CR 26.1-1 filed by Appellee Masimo Corporation. [Entered: 03/26/2025 05:17 PM]
March 26, 2025 Filing 9 DISCLOSURE STATEMENT pursuant to FRAP 26.1 and CR 26.1-1 filed by Appellant Politan Capital Management, LP. [Entered: 03/26/2025 05:11 PM]
March 20, 2025 Filing 8 TERMINATED participation of Counsel for Appellee Kristin N. Murphy, representing Appellee Masimo Corporation. [Entered: 03/20/2025 10:57 AM]
March 20, 2025 Filing 7 NOTICE of Withdrawal as Counsel filed by Kristin N. Murphy. Counsel withdrawing on behalf of other attorney(s): No [[-]]. Party proceeding without counsel: No. [-]. [Entered: 03/20/2025 10:48 AM]
March 19, 2025 Filing 6 MEDIATION CONFERENCE SCHEDULED - DIAL-IN Assessment Conference, 04/01/2025, 1:30 p.m. PACIFIC Time. See order for instructions and details. [Entered: 03/19/2025 02:01 PM]
March 17, 2025 Filing 5 MEDIATION QUESTIONNAIRE filed by Appellant Politan Capital Management, LP. To submit pertinent confidential information directly to the Circuit Mediators, please email #[email protected] and include the case name and number in the subject line. Confidential submissions may include any information relevant to mediation of the case and settlement potential, including, but not limited to, settlement history, ongoing or potential settlement discussions, non-litigated party related issues, other pending actions, and timing considerations that may impact mediation efforts. [Entered: 03/17/2025 10:19 PM]
March 14, 2025 Filing 4 ADDED Counsel for Appellant Bethany Woodard Kristovich [Entered: 03/14/2025 04:04 PM]
March 14, 2025 Filing 3 NOTICE OF APPEARANCE by Bethany Woodard Kristovich for Appellant Politan Capital Management, LP. [Entered: 03/14/2025 01:50 PM]
March 12, 2025 Filing 2 SCHEDULE NOTICE. Mediation Questionnaire due (Appellant) 3/17/2025, Appeal Transcript Order Due (Appellant) 3/19/2025, Appeal Transcript Due (Appellant) 4/18/2025, Appeal Opening Brief Due (Appellant) 5/28/2025, Appeal Answering Brief Due (Appellee) 6/27/2025. For appeal no. 25-1621, 8:24-cv-01568-JVS-JDE. All briefs shall be served and filed pursuant to FRAP 31 and 9th Cir. R. 31-2.1. Failure of the petitioner(s)/appellant(s) to comply with this briefing schedule will result in automatic dismissal of the appeal. See 9th Cir. R. 42-1. [Entered: 03/12/2025 11:58 AM]
March 12, 2025 Filing 1 CASE OPENED. A copy of your notice of appeal / petition filed in 8:24-cv-01568-JVS-JDE has been received in the Clerk's office of the United States Court of Appeals for the Ninth Circuit. The U.S. Court of Appeals docket number 25-1621 has been assigned to this case. All communications with the court must indicate this Court of Appeals docket number. Please carefully review the docket to ensure the name(s) and contact information are correct. It is your responsibility to alert the court if your contact information changes. Resources Available For more information about case processing and to assist you in preparing your brief, please review the Case Opening Information (for #attorneys and #pro se litigants) and review the #Appellate Practice Guide. Attorneys should consider contacting the court's #Appellate Mentoring Program for help with the brief and argument. [Entered: 03/12/2025 11:51 AM]

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Search for this case: Masimo Corporation v. Politan Capital Management, LP, et al.
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Plaintiff: MASIMO CORPORATION
Represented By: Kristin N. Murphy
Represented By: Mr. Bradley Edward Marrett
Represented By: Mr. Benjamin Robert Barron
Represented By: Jennifer Keller
Represented By: Mr. Jeremy White Stamelman
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Defendant: POLITAN CAPITAL MANAGEMENT, LP, a Delaware limited partnership
Represented By: Mr. Michael E. Swartz
Represented By: Anne Conley
Represented By: Ms. Juliana Yee
Represented By: Mr. John M. Gildersleeve
Represented By: Ms. Bethany Woodard Kristovich
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Defendant: POLITAN CAPITAL MANAGEMENT GP LLC, a Delaware limited liability company
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Defendant: POLITAN CAPITAL PARTNERS GP LLC, a Delaware limited liability company
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Defendant: POLITAN CAPITAL NY LLC, NewYork limited liability company
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Defendant: POLITAN INTERMEDIATE LTD.
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Defendant: POLITAN CAPITAL PARTNERS MASTER FUND LP
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Defendant: POLITCAN CAPITAL PARTNERS LP, a Delaware limited partnership
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Defendant: POLITAN CAPITAL OFFSHORE PARTNERS LP
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Defendant: QUENTIN KOFFEY
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Defendant: MICHELLE BRENNAN
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Defendant: MATTHEW HALL
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Defendant: AARON KAPITO
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Defendant: WILLIAM JELLISON
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Defendant: DARLENE SOLOMON
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