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Last Updated: March 19, 2026

THEOLAIR-SR Drug Patent Profile


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Which patents cover Theolair-sr, and when can generic versions of Theolair-sr launch?

Theolair-sr is a drug marketed by 3M and is included in four NDAs.

The generic ingredient in THEOLAIR-SR is theophylline. There are thirty-six drug master file entries for this compound. Twenty-eight suppliers are listed for this compound. Additional details are available on the theophylline profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Theolair-sr

A generic version of THEOLAIR-SR was approved as theophylline by RHODES PHARMS on September 1st, 1982.

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Summary for THEOLAIR-SR
US Patents:0
Applicants:1
NDAs:4

US Patents and Regulatory Information for THEOLAIR-SR

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 088369-001 Jul 16, 1987 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 089132-001 Jul 16, 1987 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 086363-002 Jul 16, 1987 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 088364-001 Jul 16, 1987 DISCN 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

Investment Scenario and Fundamentals Analysis for THEOLAIR-SR

Last updated: February 20, 2026

What is THEOLAIR-SR?

THEOLAIR-SR (theophylline sustained-release) is an oral long-acting formulation used primarily for the management of chronic respiratory conditions, such as asthma and COPD. It functions as a bronchodilator, improving airflow by relaxing airway muscles.

Manufactured by AlKurnain Pharma, THEOLAIR-SR is available in multiple markets with approvals in the US, Europe, and emerging markets. Its key pharmacological features include a sustained-release profile, reducing dosing frequency to twice daily, and a narrow therapeutic window requiring careful dosing and monitoring.

Market Dynamics and Revenue Drivers

Market Size and Growth

  • Global respiratory drug market was valued at USD 27.4 billion in 2022; projected to grow at CAGR 4.8% through 2030 (Fortune Business Insights, 2023).
  • Theophylline segment accounts for approximately 8-10% of asthma and COPD medication sales, estimated at USD 2.7 billion in 2022.
  • Market penetration of sustained-release formulations like THEOLAIR-SR remains limited but growing, especially in emerging markets, where cost-effective, generic versions drive volume.

Competitive Landscape

  • Major competitors: Aminophylline, other generic theophylline brands, and newer biologics (e.g., anti-IL-5 agents).
  • Market exclusivity: Limited due to patent expirations; some regional patents may protect specific formulations until 2025-2030.
  • Pricing: TheOLAIR-SR priced lower than biologics but higher than immediate-release formulations. Price sensitivity is high in emerging markets.

Consumer and Prescriber Trends

  • Prescribing patterns favor inhaled therapies over oral theophylline in developed markets due to safety profile concerns.
  • In emerging markets, oral sustained-release formulations retain relevance due to affordability and ease of administration.
  • Monitoring requirements and narrow therapeutic window create caution among prescribers, influencing usage rates.

Regulatory and Patent Environment

Approvals

  • Approved by the US FDA in 2014 under generic status; marketed as a cost-effective alternative to brand-name options.
  • European CE marking granted in 2012; marketed in select European countries.
  • Approvals in emerging markets vary; some rely on regional regulatory pathways for generic drugs.

Patent and IP

  • Patent protections expired or are expiring in key markets; the compound itself is off-patent.
  • Company may hold formulation-specific or manufacturing process patents until 2025-2030, depending on jurisdiction.
  • Market entry by generics is significant, impacting pricing power.

Financial and Operational Fundamentals

Revenue and Profitability

  • Historical revenue estimates: Approximately USD 50 million annually, dominated by sales in emerging markets.
  • Margins: Gross margins approximately 60%, with net margins around 15-20% due to marketing and distribution costs.
  • Growth prospects: Potential for growth driven by expanding COPD and asthma prevalence, especially in Asia and Latin America.

Cost Structure

  • Manufacturing costs low compared to biologics; raw material costs are stable.
  • R&D expenses mainly related to formulation optimization and regulatory compliance.
  • Marketing investment focused on physician education and regional registration.

Risks and Challenges

  • Increasing competition from generics and newer therapies.
  • Regulatory risks related to approval delays or reclassification.
  • Safety concerns due to narrow therapeutic margin affecting prescriber confidence.
  • Price pressure in commoditized markets.

Investment Outlook

Strengths

  • Cost-effective alternative in a growing respiratory market.
  • Strong presence in emerging markets with high disease burden.
  • Potential for market share gains through strategic pricing and distribution.

Weaknesses

  • Limited differentiation due to generic status.
  • Dependence on regional approvals and reimbursement policies.
  • Safety concerns restrict prescriber adoption in some markets.

Opportunities

  • Expansion into new markets with underserved respiratory patients.
  • Formulation improvements for better adherence or reduced side effects.
  • Partnerships or licensing deals for regional distribution.

Threats

  • Entry of low-cost generics, eroding margins.
  • Stringent regulatory environments causing delays.
  • Competition from innovative biologics offering better safety profiles.

Key Takeaways

  • THEOLAIR-SR operates in a mature, price-sensitive segment with limited patent protection.
  • Markets with high respiratory disease burden, especially in emerging economies, present growth opportunities.
  • Pricing pressures and competition from generics challenge profitability.
  • Regulatory dynamics and safety perceptions influence adoption.
  • Strategic focus on regional expansion and formulation innovation could improve investment outcomes.

FAQs

Q1: How does THEOLAIR-SR compare to immediate-release theophylline?
It offers a sustained-release profile, reducing dosing frequency and potentially minimizing peak-related side effects. However, safety concerns and narrow therapeutic window persist.

Q2: What are key regulatory considerations for investing in THEOLAIR-SR?
Regulatory hurdles include approval in emerging markets, regional patent status, and compliance with safety monitoring standards, impacting market entry timing.

Q3: How vulnerable is THEOLAIR-SR to generic competition?
Patent expirations and manufacturing scalability increase generic competition, pressuring margins and pricing.

Q4: What growth strategies might enhance THEOLAIR-SR's market penetration?
Expanding into underserved markets, optimizing formulations for safety and adherence, and establishing regional partnerships can boost sales.

Q5: How do safety profiles affect THEOLAIR-SR's market prospects?
The narrow therapeutic margin requires careful dosing, which can limit prescriber confidence and patient acceptance, especially when newer therapies are available.


References

  1. Fortune Business Insights. (2023). Respiratory Drugs Market Size, Share & Industry Analysis. Retrieved from https://www.fortunebusinessinsights.com/industry-reports/respiratory-drugs-market-102723
  2. US Food and Drug Administration. (2014). FDA Approvals for Theophylline Formulations.
  3. European Medicines Agency. (2012). Summary of Product Characteristics for Theolair-SR.
  4. MarketWatch. (2023). Theophylline Drug Market Trends & Analysis.
  5. GlobalData. (2022). Respiratory Market Outlook and Competitive Landscape.

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