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Last Updated: December 16, 2025

Litigation Details for In re: Depomed, Inc. (Fed. Cir. 2015)


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Small Molecule Drugs cited in In re: Depomed, Inc.
The small molecule drugs covered by the patents cited in this case are ⤷  Get Started Free , ⤷  Get Started Free , ⤷  Get Started Free , ⤷  Get Started Free , ⤷  Get Started Free , and ⤷  Get Started Free .

Details for In re: Depomed, Inc. (Fed. Cir. 2015)

Date Filed Document No. Description Snippet Link To Document
2015-12-30 External link to document
2015-12-30 30 involving U.S. Patent No. 6,340,475 B2); and IPR2014-00655 and IPR2014-00656 (involving U.S. Patent No. 6,635,340…IPR2014-00652 Patent 6,723,340 B2 After institution of trial, Patent Owner filed a Patent Owner Response…Pharms. 4 Patent Owner filed a confidential Patent Owner Response (Paper 24) and a public Patent Owner Response…U.S. Patent No. 6,723,340— “Optimal Polymer Mixtures for Gastric Retentive Tablets” (’340 patent)— there…spelled out in the patent. And yet the Board concluded that the ’340 patent was invalid as obvious External link to document
>Date Filed >Document No. >Description >Snippet >Link To Document

Litigation Summary and Analysis for In re: Depomed, Inc. (Case No. 16-1378)

Last updated: July 31, 2025

Introduction

In re: Depomed, Inc., case number 16-1378, represents a significant chapter in pharmaceutical patent litigation, involving complex issues surrounding patent rights, regulatory challenges, and securities law implications. This proceeding, orchestrated within the bankruptcy realm of the United States Bankruptcy Court for the District of Delaware, encapsulates the strategic maneuvering in pharmaceutical patent disputes, emphasizing the intersection of patent law, corporate restructuring, and investor protections.

Background of the Case

Depomed, Inc., a biopharmaceutical firm specializing in pain management and other neurological therapies, faced a convergence of patent litigations that threatened its market position. The core of the dispute involved patent infringement allegations regarding a key drug's formulation and process patents, which the company held to secure market exclusivity. Subsequent litigation initiated by competitors challenged these patents, resulting in significant legal uncertainties.

The company's financial distress precipitated a Chapter 11 bankruptcy filing, aimed at restructuring its liabilities and defending its patent estate amid ongoing litigation threats. The bankruptcy proceedings became a battleground for controlling the patent assets and addressing breach-of-patent rights claims, leading to complex adversarial proceedings summarized under In re: Depomed, Inc.

Litigation Proceedings

1. Patent Disputes and Litigation Dynamics

The initial patent disputes centered on allegations that Depomed's patents were invalid or anticipated based on prior art references, leading to infringement challenges. These involved detailed patent validity defenses and accusations of inequitable conduct during patent prosecution, complicating the patent estate's strength.

Notably, the litigation was marked by motions for summary judgment, patent claim construction hearings, and inter partes reviews before the Patent Trial and Appeal Board (PTAB). The company's defense asserted the validity of its patents and their essential role in its business model.

2. Bankruptcy Filing and its Impact

Depomed’s bankruptcy filing was prompted by mounting legal fees, potential damages, and market decline tied to patent invalidation threats. The filing stayed pending litigation, allowing the debtor to reorganize and potentially preserve patent assets from eroding valuation. The proceeding included motions for the sale of patents and the establishment of a patent estate estate plan.

3. Sale and Litigation of Patent Assets

A key facet involved the disposition of patent rights, with the debtor proposing to sell patent assets to unrelated parties for value realization. The bankruptcy court scrutinized these transactions, considering whether the sale was in the best interest of creditors and whether due diligence was sufficient.

The litigation also entailed dispute resolution mechanisms aimed at confirming the patent rights' enforceability post-bankruptcy. This process underscored the importance of clear patent ownership and enforceability in bankruptcy settings.

4. Securities Law and Investor Effects

In addition to the patent disputes, securities law considerations surfaced, especially regarding disclosures during the bankruptcy process and the impact on shareholder rights. Investors faced challenges in assessing asset valuation and the impact of patent invalidation risks on stock value and class claims.

Legal and Strategic Analysis

Patent Validity and Enforcement

The core issue in In re: Depomed, Inc. revolved around the strength and enforceability of its patents in a contested legal environment. The challenges posed by prior art and the PTAB proceedings underscored the vulnerabilities of patent portfolios in high-stakes pharmaceutical litigation. The outcome demonstrated that patentees must rigorously defend patent validity through comprehensive prior art searches and patent prosecution strategies to withstand court and administrative challenges.

Bankruptcy as a Strategic Shield

Depomed’s use of Chapter 11 protections highlights an emerging strategy among pharmaceutical firms facing patent clearance issues: leveraging bankruptcy to preserve patent assets and negotiate adverse claims. The case illustrated the importance of rigorous valuation and careful transaction structuring when disposing of patent rights within bankruptcy proceedings.

Asset Sale Implications

The sale of patent rights in bankruptcy contexts can significantly affect future revenue streams, especially for drugs with market exclusivity based solely on patent protection. These cases emphasize the criticality of thorough due diligence and the importance of court approval, ensuring that transfers align with debtor and creditor interests.

Regulatory and Investor Considerations

The case also reflected the delicate interface between regulatory filings, patent status, and investor communications. Timely disclosures and transparent reporting proved vital for maintaining market confidence amidst patent disputes and restructuring efforts.

Key Legal Takeaways

  • Patent validity defenses are increasingly scrutinized through PTAB proceedings, requiring robust prosecution strategies.
  • Bankruptcy offers a strategic avenue to silence patent disputes temporarily but necessitates careful sale and asset transfer procedures.
  • The enforceability of patents post-bankruptcy hinges on clear ownership rights and thorough litigation defenses.
  • Disclosure protocols must adapt to reflect ongoing patent litigation and restructuring, safeguarding against securities law claims.
  • The valuation of patent assets in bankruptcy impacts creditor recoveries and future licensing opportunities.

Conclusion

Re: Depomed, Inc. underscores the layered complexities faced by pharmaceutical companies navigating patent disputes and financial distress. It highlights how strategic bankruptcy filings can serve as both a litigation management tool and an asset disposition vehicle. Effective patent diligence, transparent disclosure, and careful transaction structuring are foundational to safeguarding corporate value in this high-stakes dynamic.

Key Takeaways

  • Companies must anticipate patent validity challenges and fortify their patent prosecution and enforcement strategies accordingly.
  • Bankruptcy can be strategically employed to manage patent disputes but requires diligent procedural adherence to maximize asset value.
  • Disposition of patent assets necessitates thorough due diligence and court oversight to ensure enforceability and proper valuation.
  • Transparency with investors about ongoing patent and bankruptcy proceedings reduces legal risk and enhances market stability.
  • Vigilance in patent and securities law compliance is essential for protecting corporate reputation and stakeholder interests.

Frequently Asked Questions

  1. What triggered Depomed’s bankruptcy in case 16-1378?
    The bankruptcy was primarily triggered by legal uncertainties surrounding patent validity, mounting litigation costs, and threats of invalidation that could erode core revenue streams.

  2. How do patent disputes influence bankruptcy proceedings?
    Patent disputes influence bankruptcy by affecting asset valuation, ownership rights, and potential sale or licensing strategies, often necessitating court approval and strategic asset management.

  3. What role does the PTAB play in pharmaceutical patent disputes?
    The PTAB conducts inter partes reviews to challenge patent validity, serving as an administrative alternative to court litigation and significantly impacting patent enforceability.

  4. Can bankruptcy protect patent rights from infringement claims?
    Bankruptcy provides temporary relief from certain claims and can facilitate restructuring but does not inherently shield patent rights from infringement actions, especially if patent validity is disputed.

  5. What are best practices for companies patenting drugs in light of this case?
    Rigorous prior art searches, comprehensive patent prosecution, proactive defense in administrative and judicial proceedings, and transparent disclosures are essential practices.


Sources:
[1] In re: Depomed, Inc., Case No. 16-1378, U.S. Bankruptcy Court, District of Delaware.
[2] U.S. Patent and Trademark Office, Patent Trial and Appeal Board Proceedings.
[3] Securities and Exchange Commission, Disclosure Requirements in Bankruptcy.

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