PALLADONE Drug Patent Profile

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

Palladone is a drug marketed by Purdue Pharma Lp and is included in one NDA.

The generic ingredient in PALLADONE is hydromorphone hydrochloride. There are fourteen drug master file entries for this compound. Fifteen suppliers are listed for this compound. Additional details are available on the hydromorphone hydrochloride profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Palladone

A generic version of PALLADONE was approved as hydromorphone hydrochloride by HIKMA on July 29^th, 1998.

Summary for PALLADONE

US Patents:	0
Applicants:	1
NDAs:	1
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for PALLADONE

US Patents and Regulatory Information for PALLADONE

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Purdue Pharma Lp	PALLADONE	hydromorphone hydrochloride	CAPSULE, EXTENDED RELEASE;ORAL	021044-001	Sep 24, 2004		DISCN	No	No
Purdue Pharma Lp	PALLADONE	hydromorphone hydrochloride	CAPSULE, EXTENDED RELEASE;ORAL	021044-004	Sep 24, 2004		DISCN	No	No
Purdue Pharma Lp	PALLADONE	hydromorphone hydrochloride	CAPSULE, EXTENDED RELEASE;ORAL	021044-002	Sep 24, 2004		DISCN	No	No
Purdue Pharma Lp	PALLADONE	hydromorphone hydrochloride	CAPSULE, EXTENDED RELEASE;ORAL	021044-003	Sep 24, 2004		DISCN	No	No

International Patents for PALLADONE

See the table below for patents covering PALLADONE around the world.

Country	Patent Number	Title	Estimated Expiration
Austria	201989
Norway	331650
India	182556	A method of producing a controlled release analgesic pharmaceutical composition
Portugal	1477162
Finland	121565

Investment Scenario, Market Dynamics, and Financial Trajectory for PALLADONE

Last updated: February 3, 2026

Summary

PALLADONE (hydromorphone hydrochloride extended-release) is an opioid analgesic historically used for managing severe pain. Its market presence has diminished significantly due to regulatory restrictions, safety concerns regarding opioid addiction, and patent expirations. This report provides an in-depth view of PALLADONE’s current investment landscape, competitive market dynamics, sales trajectory, and future prospects.

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1. Product Overview and Historical Context

Attribute	Details
Active Ingredient	Hydromorphone hydrochloride
Formulation	Extended-release oral tablet
Original Manufacturer	Purdue Pharma
FDA Approval Date	August 2004
Patent Expiration	September 2010 (approximate; patent rights vary)
Market Withdrawal	U.S. market withdrew PALLADONE from distribution in 2013 primarily due to safety concerns

Key Points:

• PALLADONE was initially targeted at chronic pain management.
• Regulatory agencies, notably the U.S. FDA, issued safety warnings related to overdose risks and abuse potential.
• Market withdrawal curtailed further revenue opportunities in the U.S.

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2. Market Dynamics Affecting PALLADONE

2.1. Regulatory Environment

Regulatory Agency	Actions & Impact	Timeline
FDA	Safety warnings, class-wide opioid restrictions	2010–2013
DEA	Rescheduling and tighter controls on opioids	2014–present
EMA (Europe)	Similar restrictions, reduced approvals	2010–2018

Impact: Stricter regulations led to diminished prescribing and limited market penetration, especially in North America and Europe.

2.2. Market Competition

Competitors	Key Products	Market Share (%)	Notes
Immediate-release hydromorphone formulations	Dilaudid, Exalgo	Major share	Safer, less regulatory scrutiny
Other extended-release opioids	OxyContin, MS Contin	Significant	Preference shift toward formulations with lower abuse potential
Non-opioid analgesics	NSAIDs, acetaminophen	Growing	Alternative pain management options

Observation: The emergence of abuse-deterrent formulations and non-opioid approaches has eroded PALLADONE’s market share.

2.3. Demographic and Prescriber Trends

• Chronic Pain Patients: Aging populations augment demand; however, prescriber caution limits opioid use.
• Regulatory & Societal Concerns: Rising awareness about opioid misuse reduces healthcare provider prescribing confidence.

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3. Financial Trajectory and Revenue Analysis

3.1. Historical Revenue Performance

Year	Estimated Revenue (USD millions)	Market Share (%)	Remarks
2005	50	Moderate	Post-launch growth
2010	30	Decline	Pre-withdrawal decline
2013	0	N/A	Market withdrawal in the US

Source: Company reports and market analyses (e.g., Ref [1]).

3.2. Current Revenue Prospects

• Global Market: Limited to niche markets outside the U.S., e.g., certain European and Asian countries.
• Potential Resurgence: Possible if formulations are reformulated with abuse-deterrent technologies or if regulatory landscape relaxes; currently, these are unlikely given global opioid regulation trends.

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4. Investment Opportunities and Risks

4.1. Opportunities

Area	Potential Strategies	Considerations
Generic Market Expansion	Capitalize on expired patents with generic equivalents	Patent cliff benefits competitors
Reformulated Products	Develop abuse-deterrent extended-release formulations	High R&D costs, regulatory hurdles
Geographic Diversification	Target emerging markets with less regulatory stringency	Variable market acceptance

4.2. Risks

Risk Factors	Description	Impact
Regulatory Restrictions	Enhanced controls, scheduling, and restrictions on opioids	Significant decline in sales
Legal & Litigation Risks	Litigation related to opioid epidemic, potentially affecting assets	Financial liabilities, reputational damage
Market Substitution	Shift to non-opioid analgesics and alternative therapies	Reduced demand for opioids
Patent & Generic Competition	Increased presence of generics lowering profit margins	Profit erosion

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5. Comparative Analysis: PALLADONE Versus Competitors

Parameter	PALLADONE	Dilaudid (Hydromorphone HCl)	OxyContin (Oxycodone)	Exalgo (Extended-release hydromorphone)
Last FDA Approval	2004	1951	1995	2010
Patent Status	Expired by 2010	Patent expired	Patent active (varies)	Patent granted (new formulation)
Market Presence	Declined since 2013	Widely used	Leading opioid in U.S.	Growing if reformulated
Abuse Deterrent Technology	No	No	Yes (some formulations)	Yes

Implication: PALLADONE has lost competitive edge compared to newer, abuse-deterrent formulations.

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6. Future Outlook and Strategic Considerations

6.1. Regulatory Trends

• Ongoing crackdowns on opioid prescribing.
• Discussion of stricter scheduling for extended-release formulations.
• Emphasis on developing non-addictive analgesics.

6.2. Market Evolution

Scenario	Likelihood	Impact on PALLADONE	Comments
Continued decline	High	Marginal or negligible sales	Driven by regulation and market shifts
Reformulation with abuse-deterrence	Moderate	Possible niche resurgence	Requires significant R&D investment
Diversification into other markets	Low	Limited, given current product profile	Opportunities in non-opioid analgesics

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7. Key Market Data and Policy References

Source	Details
FDA (2022)	Opioid prescribing decline statistics
IMS Health (2021)	Global opioid market size estimated at USD 31.5 billion in 2020
CDC (2021)	Overdose statistics, highlighting opioid epidemic impact
Patent databases	Patent expiry dates, formulation patents, and exclusivity windows
Industry reports	Market share analyses of opioid products and formulations

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Conclusion

PALLADONE's original market prominence has substantially eroded due to regulatory, safety, and market competition factors. While current sales are negligible in developed markets, there exists limited potential for niche use or reformulation if regulatory and societal paradigms shift. Entirely new investment in PALLADONE remains high-risk absent technological innovation or regulatory leniency. The current trajectory underscores a shrinking market emphasizing the need for diversified strategies aligned with evolving pain management standards.

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Key Takeaways

• Market Decline: PALLADONE's sales have dwindled post-2010; product withdrawal from the U.S. in 2013 limits profitability.
• Regulatory Environment: Tight controls and safety warnings continue to constrain opioid markets globally.
• Competitive Pressure: Abuse-deterrent formulations and non-opioid alternatives dominate current pain management.
• Investment Outlook: Limited unless formulations are reformulated with abuse-deterrence, or new markets emerge.
• Strategic Focus: Diversification into non-opioid therapeutics and emerging markets offers better growth prospects.

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FAQs

1. Is there any current manufacturing or marketing of PALLADONE?
No, PALLADONE has been withdrawn from the U.S. market since 2013 under regulatory mandates. Its presence remains limited to some regions with less restrictive regulations, if at all.

2. What are the main risks of investing in the PALLADONE product or its derivatives?
Regulatory restrictions, societal concerns over opioids, patent expirations, and competitive pressures from abuse-deterrent and non-opioid treatments constitute primary risks.

3. Are there ongoing R&D efforts to reformulate PALLADONE?
There have been industry initiatives to develop abuse-deterrent formulations for hydromorphone products, but no widely adopted reformulation of PALLADONE has been announced.

4. How does PALLADONE compare with other opioid products in terms of safety and market share?
Compared to newer formulations like Exalgo, PALLADONE lacks abuse-deterrent features and has significantly lost market share, especially after regulatory restrictions intensified.

5. What alternative markets could offer growth opportunities for hydromorphone-based products?
Emerging markets with less stringent regulations, or niche use cases such as palliative care in specific regions, may present opportunities, albeit with considerable challenges.

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References

[1] Market analysis reports and historical company disclosures.
[2] U.S. Food and Drug Administration (FDA). Regulatory actions on opioids. 2010–2022.
[3] CDC National Vital Statistics Reports. Opioid overdose statistics. 2021.
[4] IMS Health Reports. Global opioid market size. 2021.
[5] Patent databases and legal filings. 2010–2022.