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Last Updated: April 3, 2026

RIFAMATE Drug Patent Profile


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When do Rifamate patents expire, and when can generic versions of Rifamate launch?

Rifamate is a drug marketed by Sanofi Aventis Us and is included in one NDA.

The generic ingredient in RIFAMATE is isoniazid; rifampin. There are five drug master file entries for this compound. Additional details are available on the isoniazid; rifampin profile page.

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Summary for RIFAMATE
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for RIFAMATE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sanofi Aventis Us RIFAMATE isoniazid; rifampin CAPSULE;ORAL 061884-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Investment Scenario and Fundamentals Analysis of RIFAMATE

Last updated: February 20, 2026

What is RIFAMATE?

RIFAMATE is a combination drug primarily used for the treatment of tuberculosis (TB). Its key components include rifampicin and isoniazid, which are standard first-line agents in TB therapy. Marketed by various pharmaceutical companies globally, RIFAMATE addresses a significant public health issue, with global TB prevalence estimated at 10 million cases in 2021 according to the WHO[1].

Market Landscape and Competitive Position

Global TB Drugs Market

The TB drugs market was valued at approximately $1.4 billion in 2021 and is projected to grow at a compound annual growth rate (CAGR) of 4.5% from 2022 to 2027[2]. RIFAMATE's positioning depends on its approval status, formulation innovations, and patent lifecycle.

Competitive Dynamics

Key competitors include:

  • Johnson & Johnson (Janssen's Stellara) line-up.
  • AstraZeneca's Zarid (combination of rifampicin and isoniazid).
  • Generic manufacturers producing rifampicin-based fixed-dose combinations.

RIFAMATE's competitive advantage hinges on:

  • Patent exclusivities.
  • Patent protections in different jurisdictions.
  • Supply chain robustness.

Patent Status & Regulatory Approvals

Patent expiry for key formulations occurs within the next 3-5 years in several markets[3]. Regulatory approvals vary:

  • FDA approval granted in the US.
  • EMA approval granted in the EU.
  • Pending approvals in emerging markets like India and Southeast Asia.

Approval timelines can influence market penetration and revenue streams.

Financial Fundamentals

Revenue and Pricing

RIFAMATE's retail price ranges:

  • US: approximately $4.50 for a 30-day supply[4].
  • Emerging markets: subsidized or institutional prices as low as $0.50.

In high-burden regions, economies of scale and generic penetration could reduce pricing pressures.

Cost Structure

Manufacturing costs are typically low, approximately 10-15% of retail prices, owing to generic production efficiencies[5].

Sales Volume Drivers

  • Global TB incidence.
  • Treatment adherence initiatives.
  • Government procurement programs.
  • Supply chain stability.

Profitability Metrics

Gross margins estimated at 60-70% in mature markets[6].

R&D and Regulatory Costs

  • R&D costs for new formulations or combinations: $50-150 million per product.
  • Regulatory approval costs: $5-20 million per jurisdiction.

Patent and License Expirations

Patent expirations are imminent for some formulations, which could lead to generic competition and pricing erosion.

Investment Risks and Opportunities

Risks

  • Patent expiry leading to generic competition and pricing pressure.
  • Regulatory delays or rejections in new markets.
  • Supply chain disruptions, especially amid global health crises.
  • Variability in TB prevalence due to public health interventions.

Opportunities

  • Expanding indications, such as latent TB infection.
  • Development of combination therapies with shorter treatment durations.
  • Entry into high-growth emerging markets.
  • Licensing and partnership opportunities for new formulations.

Strategic Considerations

Investors should analyze:

  • Patent protection timelines.
  • Market access strategies.
  • Competitive landscape shifts.
  • Potential pipeline developments, such as fixed-dose combinations with new agents.

Key Takeaways

  • RIFAMATE operates in a market with significant demand driven by TB prevalence.
  • The drug benefits from established use and existing regulatory approvals but faces looming patent expirations.
  • Financial stability depends on volume growth, market penetration, and pricing strategies.
  • Emerging markets present upside opportunities but also competitive risks from generics.
  • Investment prospects improve with innovation, such as shorter regimens or formulations.

FAQs

1. What is the current patent status of RIFAMATE?

Patent protections for RIFAMATE formulations are set to expire over the next 3-5 years in key jurisdictions, enabling generic competition therein.

2. How does pricing influence RIFAMATE’s market share?

Pricing varies significantly across regions. Higher prices in developed markets support margins, while lower prices in emerging markets facilitate volume growth.

3. Are there any ongoing clinical trials for RIFAMATE?

Current trials focus on new formulations, fixed-dose combinations, and shorter treatment regimens to enhance compliance.

4. What regulatory hurdles does RIFAMATE face?

Regulatory approval delays or rejections, especially in markets without prior approvals, could hinder market expansion.

5. How vulnerable is RIFAMATE to competition from generics?

Patent expirations pose a significant threat, potentially leading to increased generic competition and reduced profitability.

References

[1] World Health Organization. (2022). Global Tuberculosis Report 2022. WHO.

[2] MarketsandMarkets. (2022). Tuberculosis Drugs Market by Therapy, Ending, and Region. Report ID: MMR-22-1003.

[3] PatentScope. (2023). Patent Status for RIFAMATE formulations. WIPO.

[4] GoodRx. (2023). RIFAMATE pricing and discounts.

[5] IMS Health. (2022). Generic drug manufacturing cost analysis.

[6] Bloomberg Intelligence. (2023). Pharmaceutical margins and cost structures.

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