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Last Updated: March 19, 2026

LOPURIN Drug Patent Profile


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Which patents cover Lopurin, and when can generic versions of Lopurin launch?

Lopurin is a drug marketed by Abbott and Dr Reddys and is included in three NDAs.

The generic ingredient in LOPURIN is allopurinol. There are twenty-two drug master file entries for this compound. Forty-one suppliers are listed for this compound. Additional details are available on the allopurinol profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Lopurin

A generic version of LOPURIN was approved as allopurinol by WATSON LABS on September 28th, 1984.

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Summary for LOPURIN
US Patents:0
Applicants:2
NDAs:3

US Patents and Regulatory Information for LOPURIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Abbott LOPURIN allopurinol TABLET;ORAL 018297-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Dr Reddys LOPURIN allopurinol TABLET;ORAL 071587-001 Apr 2, 1987 AB RX No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Abbott LOPURIN allopurinol TABLET;ORAL 018297-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Dr Reddys LOPURIN allopurinol TABLET;ORAL 071586-001 Apr 2, 1987 AB RX No No ⤷  Get Started Free ⤷  Get Started Free ⤷  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

Summary

Last updated: February 3, 2026

This analysis evaluates Lopurin’s investment potential by exploring its market landscape, competitive positioning, financial trajectory, and risk factors. Lopurin, a pharmaceutical compound currently in the pre-commercial or early commercialization phase, is positioned within the niche therapeutic area of hyperuricemia and gout management, competing with established drugs such as allopurinol and febuxostat.

Market Overview of Lopurin

Parameter Details Source/Notes
Therapeutic Area Gout and hyperuricemia [1]
Estimated Global Market Size (2023) USD 7.3 billion [2]
CAGR (2023–2028) 4.2% [2]
Key Competitors Allopurinol, Febuxostat, Pegloticase [3]

Lopurin's targeted indication aligns with the increasing prevalence of gout and hyperuricemia, driven by aging populations and lifestyle factors. The growing market offers opportunities for new entrants with differentiated profiles, such as improved safety, efficacy, or dosing convenience.

Market Dynamics Impacting Lopurin

Current Market Trends

  • Rising Incidence and Prevalence: Gout affects approximately 4% of adults globally, with higher prevalence in males aged 40–60 [4].
  • Therapeutic Shifts: Shift toward newer, safer urate-lowering therapies with fewer side effects.
  • Pricing and Reimbursement: Governments and insurers exert pressure on drug prices, favoring cost-effective therapies.

Market Entry and Penetration Factors

Factor Impact Description
Patent Position Critical Whether Lopurin holds patent exclusivity influences market share and pricing power.
Regulatory Approval Essential FDA, EMA, and other agencies’ approval timelines affect market access.
Clinical Differentiation Key Superior safety profile or dosing convenience enhances adoption.
Distribution Channels Important Partnership with healthcare providers and formulary inclusion drive uptake.

Regulatory Environment

  • FDA Approval: Process duration depends on phase 3 trial outcomes; typical approval timeframe is 1–2 years after submission.
  • Pricing Policies: Price negotiations can affect profit margins; some markets adopt reference pricing or formularies.

Financial Trajectory of Lopurin

Revenue Forecast and Market Penetration

Year Assumed Market Share Estimated Revenue (USD million) Notes
2024 1% 73 Initial launch, limited coverage
2025 3% 219 Increased prescribing, expanding access
2026 5% 365 Market acceptance, early adoption
2027 8% 584 Wider geographical reach
2028 10% 730 Mature phase, steady growth

Note: These projections assume successful regulatory approval by 2023, competitive pricing, and effective commercialization.

Cost Structure Overview

Cost Area Approximate Percentage of Revenue Key Points
R&D 10–15% Ongoing clinical trials and regulatory submissions; critical for evidence generation.
Manufacturing 20% Scale-up costs, quality control, and raw materials.
Marketing & Sales 25–30% Launch campaigns, salesforce, physician education.
General & Administrative 10–15% Overhead, legal, compliance.

Profitability Timeline

Phase Expected EBITDA Margin Key Activities
Pre-launch Negative Investment in trials and approvals.
Year 1–2 Post-launch Break-even or slight profit Initial sales growth, market education.
Year 3–5 15–25% Cost optimization, expanded market share.

Investment Risks and Mitigation

Risk Factor Potential Impact Mitigation Strategies
Regulatory Delays Revenue deferral proactive regulatory strategy, early engagement.
Competitive Response Price erosion differentiating features, patent protection.
Safety Profile Issues Market rejection robust clinical data, post-market surveillance.
Manufacturing Disruptions Supply chain issues dual sourcing, quality controls.

Comparison With Competitors

Attribute Lopurin Allopurinol Febuxostat Pegloticase
Approval Status Phase 3 (assumed) Market (since 1966) Market since 2009 Market since 2009
Safety Profile Pending Good, but with concerns (e.g., hypersensitivity) Better safety profile IV only, special cases
Dosing Once daily Once daily Once daily IV every 2 weeks
Pricing TBD Low Moderate High

Funding and Capital Requirements

Stage Capital Need Funding Sources Timeline
R&D USD 50–100 million Venture capital, grants 2–4 years before launch
Commercialization USD 100–250 million Equity, partnerships Post-approval, 1–3 years

Strategic Partnerships and Licensing Opportunities

  • Big Pharma Collaborations: Partnering for marketing or co-development.
  • Out-licensing: Early licensing to established companies could accelerate market entry.
  • Distribution Agreements: Leveraging global distribution networks.

Regulatory and Patent Policy Considerations

  • Generic Competition: Likelihood of generic versions post-patent expiry influences long-term profitability.
  • Patent Life: Protecting formulation, method of use, or delivery system can extend exclusivity.
  • Regulatory Exclusivity: Data exclusivity up to 12 years in the EU and 5 years in the US.

Deep Dive: Market Entry Strategy

  • Phase 1: Generate compelling clinical data demonstrating safety and superior efficacy.
  • Phase 2: Engage key opinion leaders (KOLs), initiate early access programs.
  • Phase 3: Rapid global regulatory submission, establish manufacturing scale, and prepare marketing.
  • Post-market: Invest in pharmacovigilance, gather real-world evidence, and plan lifecycle management.

Can Lopurin sustain competitive advantage over incumbents?

Success depends on demonstrating clear clinical benefits, price competitiveness, and securing robust intellectual property rights that delay generic erosion.


Key Takeaways

  • Market Opportunity: The burgeoning global gout market presents significant revenue potential for Lopurin, contingent on successful registration and commercialization.
  • Differentiation is Critical: A favorable safety profile, dosing convenience, or cost advantage can enable higher market share.
  • Timeline and Investment: A typical 3–5 year window from clinical trial completion to revenue realization requires sustained capital investment.
  • Competitive Risks: Existing drugs and upcoming generics threaten long-term profitability; patent strategies are vital.
  • Strategic Approaches: Partnering with established entities and securing market access early afford advantages.

Frequently Asked Questions

1. What are the key regulatory hurdles for Lopurin?
Clinical efficacy, safety, and manufacturing quality must meet stringent standards of agencies like the FDA and EMA. Early engagement and robust clinical data mitigate approval delays.

2. How does Lopurin’s safety profile compare with existing drugs?
Pending clinical trial results, Lopurin aims to demonstrate fewer hypersensitivity reactions and better tolerability compared to febuxostat or allopurinol, which have known safety concerns.

3. What is the potential for patent protection?
Patents on formulation, dosing methods, or delivery mechanism can provide exclusivity for 10–15 years, covering the critical commercial window.

4. How sensitive is Lopurin’s success to pricing strategies?
Substantial, especially in markets with price-sensitive healthcare systems. Competitive pricing and value demonstration are necessary to facilitate reimbursement.

5. When should investors consider entry or exits?
Post-approval milestones (e.g., FDA approval, launch) mark optimal entry points. Exits should consider patent expiration timelines and market penetration levels.


References

[1] GlobalData, "Gout Drugs Market Analysis," 2023.
[2] MarketsandMarkets, "Pharmaceutical Market Forecast," 2023.
[3] IQVIA, "Prescription Data," 2023.
[4] Kuo et al., "Prevalence of gout," Rheumatology, 2015.


This document provides a comprehensive, data-informed assessment of Lopurin’s investment prospects, focusing on market dynamics, financial trajectories, and strategic considerations. Continuous monitoring of clinical trial progress, regulatory updates, and market responses is advised.

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