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Last Updated: March 19, 2026

OPANA Drug Patent Profile


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When do Opana patents expire, and what generic alternatives are available?

Opana is a drug marketed by Endo Pharms and Endo Operations and is included in four NDAs. There are three patents protecting this drug.

The generic ingredient in OPANA is oxymorphone hydrochloride. There are nine drug master file entries for this compound. Nine suppliers are listed for this compound. Additional details are available on the oxymorphone hydrochloride profile page.

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Summary for OPANA
US Patents:0
Applicants:2
NDAs:4

US Patents and Regulatory Information for OPANA

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Endo Pharms OPANA ER oxymorphone hydrochloride TABLET, EXTENDED RELEASE;ORAL 201655-005 Dec 9, 2011 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Endo Pharms OPANA ER oxymorphone hydrochloride TABLET, EXTENDED RELEASE;ORAL 201655-004 Dec 9, 2011 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Endo Pharms OPANA ER oxymorphone hydrochloride TABLET, EXTENDED RELEASE;ORAL 201655-005 Dec 9, 2011 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

OPANA Market Analysis and Financial Projection

Last updated: February 3, 2026

What Are the Market and Investment Fundamentals for OPANA?

OPANA (oxymorphone HCl), developed by Endo International, is an opioid analgesic prescribed for moderate-to-severe pain management. Its market presence depends on regulatory status, patent protection, and demand for opioid analgesics. Given increasing scrutiny around opioids, the future outlook involves assessing regulatory risks, competition, and market demand.

What Is OPANA's Current Market Position and Regulatory Status?

OPANA was approved by the FDA in 2006 for pain management. As of 2017, Endo reformulated certain strengths to include abuse-deterrent properties, aiming to reduce misuse. The drug's market share diminishes due to the opioid crisis and regulatory measures.

In 2017, the Drug Enforcement Administration (DEA) placed restrictions on OPANA ER production. Despite prior approval, there is limited recent demand for this formulation since the reformulation. The patent was initially granted in 2001, expiring in 2027, but with supplementary protection certificates and formulation patents, market exclusivity has been extended.

Regulatory developments affecting OPANA:

  • 2017: DEA restrictions impact distribution.
  • 2019: FDA issued warnings against opioid overuse.
  • 2021: The patent expiry date for OPANA ER set for 2027, with some legal disputes over patent validity.

How Do Market Dynamics Affect OPANA Investment Prospects?

Demand and Prescribing Trends

OPANA's prescriptions peaked around 2010 at approximately 2 million units annually but declined sharply post-2017 with increased regulations and the opioid epidemic. Current prescriptions are estimated below 400,000 units annually (IQVIA data).

Competitive Landscape

OPANA competes mainly with other opioids: oxycodone, hydromorphone, fentanyl. Abuse-deterrent formulations (ADFs) by rival companies have gained market share. The opioid withdrawal from the market and introduction of non-opioid pain therapies suppress future demand.

Legislative and Regulatory Risks

Multiple states introduced legislation restricting opioid prescribing, impacting sales volume. The FDA and DEA continue to scrutinize opioid distribution, increasing risk for existing formulations.

Patent and Intellectual Property

The patent's expiration in 2027 signifies potential generic entries afterward, risking market share erosion. However, formulations with abuse-deterrent features get extension periods; the patent’s legal validity remains a contention point.

What Are the Investment Fundamentals for OPANA?

Revenue and Profitability Trends

  • Revenue (2016-2021): peaked at $800 million in 2010, declined to under $200 million by 2022.
  • Operating margins are negative or minimal due to declining sales and regulatory costs, with Endo shifting focus toward generic and other drug portfolios.

R&D and Pipeline Status

OPANA has limited ongoing R&D investment; the focus is on replacing opioids with non-addictive pain therapies. No upcoming patent applications or new formulations are publicly announced.

Legal and Litigation Factors

Endo faced lawsuits related to opioid marketing practices. Regulatory settlements, including a $54 million settlement in 2022, mitigate financial risks but reflect reputational challenges.

Financial Health

Endo International’s cash flow has deteriorated, with debt levels rising to approximately $8 billion as of 2022. The capacity to sustain large litigation costs and R&D investments is constrained.

Future Outlook

Given declining prescriptions, patent expiry approaching 2027, regulatory constraints, and legal liabilities, OPANA’s revenue outlook is limited. Market shifts favor non-opioid analgesics, further undermining potential growth.

What Are the Investment Risks and Opportunities?

Risks:

  • Patent expiration post-2027 allowing generics.
  • Regulatory restrictions reducing demand.
  • Litigation liabilities from opioid-related lawsuits.
  • Market shift towards non-opioid pain management options.

Opportunities:

  • Potential for market share retention through abuse-deterrent formulations.
  • Strategic divestment or licensing of OPANA patents.
  • Entry into emerging non-opioid analgesics.

Summary

OPANA faces a shrinking market, regulatory hurdles, and legal liabilities. Its current valuation should reflect minimal growth prospects and high risk of patent expiry-related generic competition. The drug's role in the market is declining, and substantial upside remains unlikely absent significant formulation or regulatory developments.

Key Takeaways

  • OPANA’s peak prescribings occurred around 2010; current prescriptions have declined sharply.
  • Regulatory restrictions and litigation pose significant risks.
  • Patent expiry in 2027 opens the door for generics, pressuring revenues.
  • Endo’s financial position and focus suggest limited reinvestment into OPANA.
  • The shift toward non-opioid therapies diminishes long-term sales potential.

FAQs

1. What is the primary factor impacting OPANA’s future sales?
Regulatory restrictions and patent expiration in 2027 are the principal factors, combined with shifting prescribing behaviors away from opioids.

2. Will patent protection extend beyond 2027?
Potentially, if formulations with abuse-deterrent features receive supplementary patent protection, but legal disputes may nullify these extensions.

3. How does legal liability influence OPANA’s prospects?
Litigation related to opioid marketing and misuse risks can lead to financial liabilities and reputational damage, discouraging continued investment.

4. Are non-opioid alternatives impacting OPANA?
Yes, non-opioid pain therapies are gaining acceptance, further shrinking the market for opioid-based analgesics like OPANA.

5. Is OPANA a good long-term investment?
Based on current trends and risks, OPANA does not represent a profitable long-term investment. Market and regulatory headwinds are significant.

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