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Last Updated: April 8, 2025

Litigation Details for Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership (D. Del. 2019)


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Details for Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership (D. Del. 2019)

Date FiledDocument No.DescriptionSnippetLink To Document
2019-02-28 28 Consent Judgment - Proposed .S. Patent Nos. 7,229,636, 7,404,489, 7,879,349, 8,003,353, 8,940,714 and 9,415,007 (the “Patents” and…DISMISSAL ORDER WHEREAS, this action for patent infringement has been brought by Plaintiff Endo…New Drug Application (“ANDA”) No. 212458, the Patents are valid and enforceable. For the avoidance of…validity, enforceability and/or infringement of the Patents in any action or proceeding involving any Perrigo… 3. Defendant Perrigo has infringed the Patents pursuant to 35 U.S.C. § 271(e)(2) by filing ANDA External link to document
>Date Filed>Document No.>Description>Snippet>Link To Document
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Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership: A Comprehensive Litigation Summary and Analysis

Case Overview

The case of Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership (Case No. 1:19-cv-00437-MN) involves a patent infringement dispute related to Endo Pharmaceuticals' vitamin B12 nasal spray, Nascobal. Here is a detailed summary and analysis of the litigation.

Background

Endo Pharmaceuticals Inc. developed and marketed Nascobal, a vitamin B12 nasal spray, which is protected by several patents. Perrigo UK FINCO Limited Partnership sought to enter the market with a generic version of this product.

Initiation of Litigation

The litigation began when Endo Pharmaceuticals initiated a lawsuit against Perrigo UK FINCO Limited Partnership in the United States District Court for the District of Delaware. The lawsuit alleged that Perrigo's generic version of the vitamin B12 nasal spray infringed on Endo's patents, specifically the '636, '489, '349, '353, '714, and '007 patents[5].

Patent Infringement Claims

The core of the dispute centered around the infringement of these patents. Endo argued that Perrigo's actions in seeking FDA approval for their generic product through an Abbreviated New Drug Application (ANDA) constituted an act of infringement under the Hatch-Waxman Act. This act allows generic drug manufacturers to file ANDAs, but it also provides a mechanism for brand-name drug manufacturers to protect their patents through litigation[1].

Litigation Process

The litigation process involved several key stages:

  • Filing and Initial Proceedings: Endo filed the lawsuit within the statutory 45-day period after Perrigo submitted its ANDA to the FDA.
  • Discovery and Mediation: Although the sources do not provide detailed information on the discovery phase of this specific case, it is common in such litigations for both parties to engage in extensive discovery, including the exchange of documents and depositions.
  • Settlement Negotiations: The parties engaged in settlement negotiations. In similar complex litigations, such as the Equifax data breach case, settlement talks can be prolonged and involve multiple mediation sessions[3].

Settlement Agreement

On August 20, 2019, Endo Pharmaceuticals and Perrigo UK FINCO Limited Partnership announced that they had reached a settlement to end the litigation. This settlement resolved the allegations of patent infringement related to Nascobal[1].

Terms of the Settlement

While the specific terms of the settlement are not detailed in the available sources, it is typical for such agreements to include:

  • Monetary Compensation: The generic manufacturer may agree to pay the brand-name manufacturer a certain amount to settle the dispute.
  • Licensing Agreements: The parties might agree on licensing terms that allow the generic manufacturer to enter the market under certain conditions.
  • Non-Monetary Terms: These could include agreements on the timing of market entry, the scope of the generic product's approval, and other regulatory compliance issues.

Impact on the Market

The settlement allows Perrigo to potentially enter the market with their generic version of the vitamin B12 nasal spray, subject to the terms agreed upon. This can lead to increased competition and potentially lower prices for consumers. However, the exact timing and conditions of Perrigo's market entry would depend on the specifics of the settlement agreement.

Legal Implications

This case highlights the importance of patent protection in the pharmaceutical industry. It demonstrates how brand-name drug manufacturers use litigation to enforce their patent rights against generic manufacturers. The settlement also underscores the role of mediation and negotiation in resolving complex patent disputes without the need for a full trial.

Key Takeaways

  • Patent Protection: The case emphasizes the critical role of patent protection in the pharmaceutical industry.
  • Litigation Strategy: It shows how litigation can be a powerful tool for enforcing patent rights.
  • Settlement Negotiations: The settlement highlights the importance of mediation and negotiation in resolving complex disputes.
  • Market Impact: The outcome can influence market competition and consumer prices.

FAQs

What was the main issue in the Endo Pharmaceuticals Inc. v. Perrigo UK FINCO Limited Partnership case?

The main issue was the alleged infringement by Perrigo of Endo's patents related to the vitamin B12 nasal spray, Nascobal.

Which court handled the case?

The case was handled in the United States District Court for the District of Delaware.

What was the outcome of the litigation?

The parties reached a settlement agreement to resolve the patent infringement allegations.

What are the typical terms of such settlement agreements?

Typical terms include monetary compensation, licensing agreements, and non-monetary terms such as market entry timing and regulatory compliance.

How does this case impact the pharmaceutical market?

The settlement can lead to increased competition and potentially lower prices for consumers once the generic version of the product enters the market.

Cited Sources

  1. Law360: "Endo, Perrigo Strike Deal In Nasal Spray Patent Suit"[1]
  2. FDA Documents: "Cyanocobalamin Nasal Spray - accessdata.fda.gov"[5]

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