Chrysalis Burlington, LLC v. Sanofi Pasteur Inc. et al
| Chrysalis Burlington, LLC |
| Sanofi Pasteur Inc. and Sanofi-Aventis U.S. LLC doing business as Sanofi-Aventis, LLC |
| Sanofi-Aventis U.S. LLC and Sanofi Pasteur Inc. |
| Chrysalis Burlington, LLC |
| 1:2025cv12486 |
| September 8, 2025 |
| U.S. District Court for the District of Massachusetts |
| Patti B Saris |
| Contract: Other |
| 28 U.S.C. § 1332 Diversity-Breach of Contract |
| Both |
Docket Report
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This docket was last retrieved on January 5, 2026. A more recent docket listing may be available from PACER.
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| Filing 38 Electronic REPORT of Alternative Dispute Resolution Provider: Stipulation of Dismissal filed prior to ADR. (NR) |
| Filing 37 STIPULATION of Dismissal by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. (Russman, David) |
| Filing 36 Notice of assignment to ADR Provider. Judge Donald L Cabell appointed for a mediation date in June 2026.(MS) |
| Filing 35 District Judge Patti B. Saris: ORDER entered. re #34 Stipulation and Order. Deadline for Defendants to file an amended answer to the complaint with amended counterclaims reset to January 9, 2026. Plaintiff will respond on or before January 23, 2026. (LP) |
Filing 34
STIPULATION and Order by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. (Russman, David)
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| Filing 33 District Judge Patti B. Saris: ORDER entered Order re #32 Stipulation and Order filed by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. Deadline for Defendants to file an amended answer to the complaint with amended counterclaims reset to December 19, 2025. Plaintiff will respond on or before January 16, 2026. (LP) |
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Filing 32
STIPULATION and Order by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. (Russman, David)
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| Filing 31 District Judge Patti B. Saris: ELECTRONIC ORDER entered. ORDER REFERRING CASE to Alternative Dispute Resolution- JUNE 2026. (CGK) |
| Filing 30 SET SCHEDULING ORDER DEADLINES as #24 Joint Statement - ADOPTED: Amended Pleadings due by 3/12/2026; Fact Discovery to be completed by 6/10/2026; Dispositive Motions due by 11/25/2026. (CGK) |
| Filing 29 Electronic Clerk's Notes for proceedings held before District Judge Patti B. Saris: Scheduling Conference held on 12/12/2025 by video. Joint Statement #24 -ADOPTED. Case referred to ADR by June 2026. Amended Answer to the Complaint #1 with amended counterclaims extended to 12/19/2025. (Court Reporter: No Court Reporter Used.) (Attorneys present: Nofer and Beck for Plaintiff; Russman and Williams for Defendant) (CGK) |
| Filing 27 NOTICE Resetting TIME ONLY FROM 11:00 AM to 9:30 AM 16.b Conference. This hearing will be conducted by video conference. Counsel of record will receive a video conference invite at the email registered in CM/ECF. If you have technical or compatibility issues with the technology, please notify the courtroom deputy of the session as soon as possible.Audio access to the hearing may be available to the media and public. Please check the #Court schedule. In order to gain access to the hearing, you must sign up at the following address: #https://forms.mad.uscourts.gov/courtlist.html.For questions regarding access to hearings, you may refer to the general orders and public notices of the Court available on #www.mad.uscourts.gov or contact the session #here. Scheduling Conference will go forward on 12/12/2025 at 09:30 AM in Remote Proceeding before District Judge Patti B. Saris. (MM) |
| Filing 26 District Judge Patti B. Saris: ORDER entered on #22 Stipulation filed by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. Amended Answer to the Complaint #1 with amended counterclaims due on or before 12/15/2025. (CGK) |
| Filing 25 District Judge Patti B. Saris: ELECTRONIC ORDER entered granting #23 Motion for Leave to Appear Pro Hac Vice Added Richard J. Williams, Jr.. Attorneys admitted Pro Hac Vice must have an individual PACER account, not a shared firm account, to electronically file in the District of Massachusetts. To register for a PACER account, go the Pacer website at # https://pacer.uscourts.gov/register-account. You must put the docket number under ADDITIONAL FILER INFORMATION on your form when registering or it will be rejected.Pro Hac Vice Admission Request Instructions # https://www.mad.uscourts.gov/caseinfo/nextgen-pro-hac-vice.htm.A Notice of Appearance must be entered on the docket by the newly admitted attorney. (CGK) |
| Filing 24 JOINT SUBMISSION pursuant to Local Rule 16.1 by Chrysalis Burlington, LLC. (Attachments: #1 Exhibit, #2 Exhibit, #3 Certificate of Service)(Beck, Richard) |
| Filing 23 MOTION for Leave to Appear Pro Hac Vice for admission of Richard J. Williams, Jr. Filing fee: $ 125, receipt number AMADC-11399556 by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. (Attachments: #1 Exhibit Affidavit of Richard J. Williams, Jr., #2 Proposed Order)(Russman, David) |
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Filing 22
STIPULATION and Order by Chrysalis Burlington, LLC and by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. (Russman, David)
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| Filing 21 District Judge Patti B. Saris: Stipulation and Order entered re #19 Stipulation and Proposed Order, filed by Chrysalis Burlington, LLC. Deadline for Defendants to File an Amended Answer to the Complaint with Amended Counterclaims reset to December 5, 2025. (LP) |
| Filing 20 NOTICE of Appearance by Richard M. Beck on behalf of Chrysalis Burlington, LLC (Attachments: #1 Certificate of Service)(Beck, Richard) |
| Filing 19 STIPULATION re #11 Answer to Complaint, Counterclaim // Stipulation and Proposed Order Extending Deadline for Defendants to File an Amended Answer to the Complaint with Amended Counterclaims on or before December 5, 2025 by Chrysalis Burlington, LLC. (Attachments: #1 Certificate of Service)(Beck, Richard) |
| Filing 18 District Judge Patti B. Saris: ELECTRONIC ORDER entered granting #16 Motion for Leave to Appear Pro Hac Vice Added Richard M. Beck. Attorneys admitted Pro Hac Vice must have an individual PACER account, not a shared firm account, to electronically file in the District of Massachusetts. To register for a PACER account, go the Pacer website at # https://pacer.uscourts.gov/register-account. You must put the docket number under ADDITIONAL FILER INFORMATION on your form when registering or it will be rejected.Pro Hac Vice Admission Request Instructions # https://www.mad.uscourts.gov/caseinfo/nextgen-pro-hac-vice.htm.A Notice of Appearance must be entered on the docket by the newly admitted attorney. (CGK) |
| Filing 17 District Judge Patti B. Saris: ELECTRONIC ORDER entered ALLOWED re #15 Motion for Leave to file Exhibit B and Exhibit C to #1 the Complaint Under Seal by Chrysalis Burlington, LLC. Counsel will receive an email within twenty-four (24) hours of this order with instructions for submitting sealed documents for which leave has been granted in accordance with the Local Rules of the U.S. District Court of Massachusetts. Counsel must include - Leave to file granted on (date of order)- in the caption of the document. (CGK) |
| Filing 16 MOTION for Leave to Appear Pro Hac Vice for admission of Richard M. Beck Filing fee: $ 125, receipt number AMADC-11354760 by Chrysalis Burlington, LLC. (Attachments: #1 Certification of Richard M. Beck, Esq., #2 Proposed Order, #3 Certificate of Service)(Nofer, Paul) |
| Filing 15 MOTION for Leave to file Exhibit B and Exhibit C to Seal to #1 the Complaint Under Seal by Chrysalis Burlington, LLC. (Attachments: #1 Exhibit 1, #2 Exhibit 2, #3 Exhibit 3, #4 Text of Proposed Order Proposed Order, #5 Exhibit Certificate of Service)(Nofer, Paul) Modified on 11/17/2025 (CGK). |
| Filing 14 NOTICE of Scheduling ConferenceThis hearing will be conducted by video conference. Counsel of record will receive a video conference invite at the email registered in CM/ECF. If you have technical or compatibility issues with the technology, please notify the courtroom deputy of the session as soon as possible.Audio access to the hearing may be available to the media and public. Please check the #Court schedule. In order to gain access to the hearing, you must sign up at the following address: #https://forms.mad.uscourts.gov/courtlist.html.For questions regarding access to hearings, you may refer to the general orders and public notices of the Court available on #www.mad.uscourts.gov or contact the session #here. Scheduling Conference set for 12/12/2025 11:00 AM in Remote Proceeding before District Judge Patti B. Saris. (MM) |
| Filing 13 District Judge Patti B. Saris: ELECTRONIC ORDER entered ALLOWED re #12 Stipulation to Extend Time to Respond. Chrysalis Burlington, LLC RESPONSE due by 11/21/2025 as to #11 COUNTERCLAIM filed by Sanofi-Aventis U.S. LLC, Sanofi Pasteur Inc. (CGK) |
| Filing 12 STIPULATION re #11 Answer to Complaint, Counterclaim to Extend Time to Respond by Chrysalis Burlington, LLC. (Nofer, Paul) |
| Filing 11 ANSWER to #1 Complaint, with Jury Demand , COUNTERCLAIM against Chrysalis Burlington, LLC by Sanofi-Aventis U.S. LLC, Sanofi Pasteur Inc..(Russman, David) |
| Filing 10 District Judge Patti B. Saris: ELECTRONIC ORDER entered ALLOWED re #9 Assented to Motion for Extension of Time to Respond to Plaintiff's Complaint. Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. Response due by 10/9/2025.(CGK) |
| Filing 9 Assented to MOTION for Extension of Time to 10/9/2025 to Respond to Plaintiff's Complaint by Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC.(Russman, David) |
| Filing 8 AFFIDAVIT OF SERVICE Executed by Chrysalis Burlington, LLC. Sanofi Pasteur Inc. served on 9/11/2025, answer due 10/2/2025. Acknowledgement filed by Chrysalis Burlington, LLC. (Attachments: #1 Exhibit, #2 Certificate of Service)(Nofer, Paul) |
| Filing 7 AFFIDAVIT OF SERVICE Executed by Chrysalis Burlington, LLC. Sanofi-Aventis U.S. LLC served on 9/11/2025, answer due 10/2/2025. Acknowledgement filed by Chrysalis Burlington, LLC. (Attachments: #1 Exhibit, #2 Certificate of Service)(Nofer, Paul) |
| Filing 6 Summons Issued as to Sanofi Pasteur Inc., Sanofi-Aventis U.S. LLC. Counsel receiving this notice electronically should download this summons, complete one for each defendant and serve it in accordance with Fed.R.Civ.P. 4 and LR 4.1. Summons will be mailed to plaintiff(s) not receiving notice electronically for completion of service. (SEC) |
| Filing 5 EXHIBIT // Disclosure of Citizenship in Diversity Jurisdiction Cases by Chrysalis Burlington, LLC. (Attachments: #1 Certificate of Service)(Nofer, Paul) |
| Filing 4 Civil Cover Sheet & Category Sheet // Category Form 11 by Chrysalis Burlington, LLC. (Attachments: #1 Certificate of Service)(Nofer, Paul) |
| Filing 3 ELECTRONIC NOTICE of Case Assignment. District Judge Patti B. Saris assigned to case. If the trial Judge issues an Order of Reference of any matter in this case to a Magistrate Judge, the matter will be transmitted to Magistrate Judge Jessica D. Hedges. (JAM) |
| Filing 2 ELECTRONIC NOTICE TO COUNSEL: Counsel shall complete and file in PDF format a Local Category Form. The form can be found on the court's website under Resources/Forms. Counsel will use the event under Other Documents- Civil Cover Sheet & Category Sheet. (SEC) |
| Filing 1 COMPLAINT against Sanofi-Aventis U.S. LLC d/b/a Sanofi-Aventis, LLC, Sanofi Pasteur Inc. Filing fee: $ 405, receipt number AMADC-11224490 (Fee Status: Filing Fee paid), filed by Chrysalis Burlington, LLC. (Attachments: #1 Exhibit, #2 Exhibit, #3 Exhibit, #4 Exhibit, #5 Civil Cover Sheet, #6 Summons, #7 Summons)(Nofer, Paul) |
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