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Heron Therapeutics v. Azurity Pharmaceuticals India | Patent Lawsuit 1:24-cv-01363

Heron Therapeutics, Inc. v. Azurity Pharmaceuticals India LLP

1:24-cv-01363 D. Del. Closed 3 patents
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Infringement action filed 12 Dec 2024 in the United States District Court for the District of Delaware and closed 1 Jun 2026, with 3 patents asserted. Recorded basis of termination: judgment on the merits for defendant.

Case recordPatsnap Litigation Data·

Case record

Case no.
1:24-cv-01363
Verdict cause
Infringement action
Court
D. Del.
Court level
District Court
Case region
Delaware
Chief judge
William C. Bryson
Trial level
First instance
Filed – Closed
12 Dec 2024 – 1 Jun 2026
Duration
536 days
Basis of termination
Judgment on the merits for Defendant
Products & marks
130mg/18mL (7.2 mg/mL) aprepitant an injectable emulsion · Cinvanti® (aprepitant) an injectable emulsion 130mg/18mL (7.2 mg/mL)
Source: Patsnap Litigation Data. Case 1:24-cv-01363, United States District Court for the District of Delaware. Open this record in Eureka
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Patent at issue
US12290520B2 Active App. US18/408463

Methods of use of emulsion formulations of aprepitant

Disclosed herein are novel pharmaceutical formulations of aprepitant suitable for parenteral administration including intravenous administration. Also included are formulations including both aprepitant and dexamethasone sodium phosphate. The pharmaceutical formulations are stable oil-in-water emulsions for non-oral treatment of emesis and are particularly useful for treatment of subjects undergoing highly emetogenic cancer chemotherapy.

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Patent standing
Legal status
Active
Granted
6 May 2025
Earliest priority
19 Sep 2014
Est. expiry
18 Sep 2035
Validity challenges
None recorded
Licences recorded
None recorded
Classification
A61K9/10A61K9/00A61K9/107A61K31/00A61K31/5377A61K31/573A61K47/10A61K47/12A61K47/18A61K47/24A61K47/26A61K47/44
Prosecution counsel
McDermott Will & Schulte LLP
Examiner
ARNOLD, ERNST V
US12290520B2 patent drawing, figure 1
Fig. 1
US12290520B2 patent drawing, figure 2
Fig. 2
US12115254B2 Active App. US18/408486

Methods of use of emulsion formulations of an NK-1 receptor antagonist

Disclosed herein are novel pharmaceutical formulations of a neurokinin-1 (NK-1) receptor antagonist suitable for parenteral administration including intravenous administration. Also included are formulations including both the NK-1 receptor antagonist and dexamethasone sodium phosphate. The pharmaceutical formulations are stable oil-in-water emulsions for non-oral treatment of emesis and are particularly useful for treatment of subjects undergoing highly emetogenic cancer chemotherapy.

Read claims and description in Eureka
Patent standing
Legal status
Active
Granted
15 Oct 2024
Est. expiry
18 Sep 2035
Validity challenges
1 on recordPGR2025-00035 · Patentability · filed by AZURITY PHARMACEUTICALS, INC
Licences recorded
None recorded
Classification
A61K9/107A61K9/00A61K31/43A61K31/435A61K31/496A61K31/5377A61K31/573A61K47/10A61K47/24A61K47/44G06F16/903G06F16/9038G06N20/00
Prosecution counsel
McDermott Will & Schulte LLP
Examiner
CRAIGO, BAHAR
US12115254B2 patent drawing, figure 1
Fig. 1
US12115254B2 patent drawing, figure 2
Fig. 2

Also asserted in this case

1 more

The docket lists 3 asserted patents. Full bibliographic detail, drawings and prosecution history for the remaining asserted patent are one query away in Eureka.

Source: Patsnap patent data + case record. Bibliographic fields and drawings reproduced from the published patent document. Break down the claims
Parties & counsel

Parties of record

Counsel of record

Source: case record + Patsnap company data. Attorney names appear as recorded in the docket. Compare both portfolios
Outcome

Basis of termination

From the record · verbatim

“WHEREAS this patent infringement action was brought by Heron Therapeutics, Inc. (“Plaintiff”) alleging, inter alia, that the filing of New Drug Application (“NDA”) No. 218754 by Azurity Pharmaceuticals, Inc.; Azurity Pharmaceuticals India LLP (F/K/A Slayback Pharma India LLP); and Slayback Pharma LLC (collectively, “Defendants”) infringed U.S. Patent No. 12,115,255 (“the ‘255 patent”) and U.S. Patent No. 12,290,520 (“the ’520 patent”), D.I. 82; WHEREAS this matter came before the Court for a bench trial to resolve the question of whether claims 5 and 23 of the ’255 patent and claim 8 of the ’520 patent are invalid for lack of written description and/or enablement under 35 U.S.C. § 112; WHEREAS the Court held a bench trial in the above-captioned action the week of November 17, 2025; WHEREAS the Court issued an opinion setting forth its findings of fact and conclusions of law on June 1, 2026. IT IS HEREBY ORDERED AND ADJUDGED: Case 1:24-cv-01363-WCB Document 222 Filed 06/01/26 Page 1 of 3 PageID #: 10102 2 (1) that claims 5 and 23 of the ’255 patent are declared to be invalid on the ground of lack of written description, under 35 U.S.C. § 112; (2) that claim 8 of the ’520 patent is declared to be invalid on the ground of lack of written description, under 35 U.S.C. § 112; (3) that in view of the Court’s rulings that the asserted claims of the ’255 and ’520 patents are invalid, judgment is granted in favor of Defendants on each of Plaintiff’s claims of patent infringement with respect to those patents; (4) pursuant to entry of this Final Judgment, all other claims and counterclaims shall be dismissed without prejudice as moot, subject to reinstatement upon reversal or remand; (5) in accordance with 21 C.F.R. § 314.107(e), Defendants shall submit a copy of this Final Judgment to the FDA within fourteen (14) days of the date of entry of this Final Judgment by the Court; (6) pursuant to Fed. R. Civ. P. 54, D. Del. LR 54.1, and 28 U.S.C. § 1920, Heron may seek its costs in an amount to be determined by the Clerk of the Court; (7) in the event that a party appeals this Final Judgment, any motion for attorneys’ fees or submission of a bill of costs, including any motion that this case is exceptional under 35 U.S.C. § 285, shall be considered timely if filed within 60 days after the expiration of the time to petition for certiorari to the United States Supreme Court or, if the appeal is withdrawn or dismissed, within 60 days after such withdrawal or dismissal; and (8) in the event that no party appeals this Final Judgment, any motion for attorneys’ fees or submission of a bill of costs, including any motion that this case is exceptional under 35 U.S.C. § 285, shall be considered timely if filed within 60 days after the expiration of the time for filing a notice of appeal under Fed. R. App. P. 3 and 4.”

Case 1:24-cv-01363 · D. Del. · closed 1 June 2026
Source: case record, verbatim. The quoted paragraph is the basis-of-termination text as filed.

Related cases

Three questions this record usually leads to. Each one runs against the full litigation and patent corpus, and cites what it finds.

FAQ

Frequently asked questions

What is case 1:24-cv-01363?

1:24-cv-01363 is a patent infringement action brought by Heron Therapeutics, Inc. against Azurity Pharmaceuticals India LLP, filed on 12 Dec 2024 in the United States District Court for the District of Delaware. The case closed on 1 June 2026.

Which patents were asserted in 1:24-cv-01363?

US12290520B2 (“Methods of use of emulsion formulations of aprepitant”), assigned to HERON THERAPEUTICS, INC., currently active; US12115254B2 (“Methods of use of emulsion formulations of an NK-1 receptor antagonist”), assigned to HERON THERAPEUTICS, INC., currently active; US12115255B2 (“Methods of use of emulsion formulations of an NK-1 receptor antagonist”), assigned to HERON THERAPEUTICS, INC.. The record also lists 130mg/18mL (7.2 mg/mL) aprepitant an injectable emulsion and Cinvanti® (aprepitant) an injectable emulsion 130mg/18mL (7.2 mg/mL).

How was case 1:24-cv-01363 terminated?

The recorded basis of termination is judgment on the merits for defendant. The termination text reads: “WHEREAS this patent infringement action was brought by Heron Therapeutics, Inc. (“Plaintiff”) alleging, inter alia, that the filing of New Drug Application (“NDA”) No. 218754 by Azurity Pharmaceuticals, Inc.; Azurity Pharmaceuticals India LLP (F/K/A Slayback Pharma India LLP); and Slayback Pharma LLC (collectively, “Defendants”) infringed U.S. Patent No. 12,115,255 (“the ‘255 patent”) and U.S. Patent No. 12,290,520 (“the ’520 patent”), D.I. 82; WHEREAS this matter came before the Court for a bench trial to resolve the question of whether claims 5 and 23 of the ’255 patent and claim 8 of the ’

What does dismissal without prejudice mean?

A dismissal without prejudice ends this action but leaves the claims alive — the plaintiff may file them again later, subject to the limitation period.

How long did case 1:24-cv-01363 take?

536 calendar days, from filing on 12 Dec 2024 to closure on 1 June 2026.

Who were the attorneys and the judge in 1:24-cv-01363?

Chief Judge William C. Bryson presided. Jeremy A. Tigan, Sydney Bruns and Vladimir J. Semendyai are recorded as counsel for plaintiff Heron Therapeutics. Barnaby Grzaslewicz, Cortlan S. Hitch, Elham F. Steiner, Joanna Garelick Goldstein, Kenneth Laurence Dorsney and Robyn H. Ast-Gmoser appear for defendant Azurity Pharmaceuticals India.

Answers reproduce fields from the case record for 1:24-cv-01363 and do not constitute legal advice. Ask your own question

Disclaimer. This page reproduces publicly available court docket data for case 1:24-cv-01363 and is provided for general information and reference only. It is not legal advice and must not be relied upon as such.

Docket data has limits. Records are drawn from a snapshot and may lag the live docket. Sealed filings, amended complaints, counterclaims and post-closure motions may not be reflected. Party names, attorney names and firm affiliations are reproduced as recorded and may contain omissions. Where a field is absent from the record, this page marks it as not recorded rather than inferring a value.

No characterisation of the parties or the outcome. This page reports what the record contains. Nothing here should be read as an assertion that any party infringed, that any patent is valid or invalid, that any settlement occurred, or that any party prevailed.

No FTO or validity opinion. Nothing on this page constitutes a freedom-to-operate, novelty, validity or infringement opinion. Any decision touching a live patent dispute should be verified independently and reviewed with qualified patent counsel.

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