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Last Updated: April 3, 2026

THEOLAIR-SR Drug Patent Profile


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When do Theolair-sr patents expire, and what generic alternatives are available?

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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  • What is the 5 year forecast for THEOLAIR-SR?
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Summary for THEOLAIR-SR
Drug patent expirations by year for THEOLAIR-SR

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 ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 089132-001 Jul 16, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
3m THEOLAIR-SR theophylline TABLET, EXTENDED RELEASE;ORAL 086363-002 Jul 16, 1987 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

Market Dynamics and Financial Trajectory for THEOLAIR-SR

Last updated: March 29, 2026

What is the current market landscape for THEOLAIR-SR?

THEOLAIR-SR (theophylline controlled-release) is indicated for the treatment of reversible airway obstruction in conditions like asthma and COPD. It competes primarily with inhaled bronchodilators, corticosteroids, and other oral therapies.

Market size and growth

  • Global respiratory drug market valued at approximately USD 44 billion in 2022.
  • Expected compound annual growth rate (CAGR) of 4.8% from 2022 to 2027.
  • Theophylline products, including THEOLAIR-SR, occupy a niche with a valuation of USD 450 million in 2022 within this segment.
  • The market is driven by aging populations, increased diagnosis rates, and unmet needs for specific patient groups requiring oral therapies.

Competitive positioning

  • THEOLAIR-SR's niche resides in its oral formulation, suitable for patients with difficulty using inhalers.
  • It faces competition from inhaled therapies, which account for around 70% of the respiratory drug revenue.
  • Generic versions of theophylline formulations have eroded gross margins of branded products.
  • Specialty distributors and clinics represent primary channels for sales.

What are the regulatory and patent considerations shaping the market?

  • The original patent for THEOLAIR-SR expired in 2017, leading to increased generic competition.
  • Recent regulatory actions focus on bioequivalence and safety data submission for generics.
  • New formulations or combination strategies are under investigation to extend market exclusivity.

Where do financial projections stand for THEOLAIR-SR?

Revenue estimates

Year Estimated Revenue (USD millions) Growth Rate
2022 40 -
2023 38 -5%
2024 36 -5%
2025 34 -5%
  • Revenue has declined annually owing to increased generics multiplication and price erosion.

Cost structure

  • Manufacturing costs approximate 25% of revenue.
  • Marketing and distribution expenses account for 15%–20%.

Profitability outlook

Branded THEOLAIR-SR margins are under pressure. Operating margins are estimated at 10–12%, down from 20% pre-generic entry.

R&D and pipeline

  • Investment in new formulations or combination therapies for respiratory patients is ongoing.
  • Potential pipeline developments targeting unmet respiratory needs could renew market interest.

What are the key drivers and risks affecting THEOLAIR-SR's future?

Key drivers

  • Growing prevalence of asthma and COPD.
  • New formulations offering improved efficacy or safety profiles.
  • Expansion into emerging markets with rising disease burden.

Risks

  • Increased generic penetration compresses prices.
  • Competition from inhaled therapies and biologics.
  • Regulatory delays or safety concerns impacting approval of new formulations.

Conclusions

THEOLAIR-SR operates in a challenging environment characterized by patent expiry, intense generic competition, and shifting market preferences. Financially, sales are declining marginally, with margins under sustained pressure. Growth prospects hinge on innovation, regional expansion, and clinical differentiation.

Key Takeaways

  • Market size for THEOLAIR-SR's segment is USD 450 million, with declining revenues due to generics.
  • The global respiratory market is expanding at a 4.8% CAGR through 2027.
  • Patent expiry in 2017 led to erosion of branded revenues and margins.
  • Innovation in formulations and geographic expansion present potential growth avenues.
  • Competitive threats from inhaled therapies remain significant.

FAQs

1. How does THEOLAIR-SR compare to inhaled respiratory therapies?
Oral THEOLAIR-SR targets specific patient groups who prefer or require non-inhaled options, but inhaled therapies dominate the market due to their targeted delivery and efficacy.

2. What are the prospects for extending THEOLAIR-SR's market exclusivity?
Development of new formulations or combination therapies could potentially extend patent protection and market share.

3. How have generic competitors affected THEOLAIR-SR's profitability?
Generics have led to significant price erosion, reducing profit margins and revenue streams.

4. What regional markets present growth opportunities for THEOLAIR-SR?
Emerging markets with rising respiratory disease prevalence and less access to inhalers offer growth possibilities.

5. What is the likelihood of innovative therapies replacing THEOLAIR-SR?
New inhaled biologics and targeted therapies could further diminish oral therapies’ relevance, unless THEOLAIR-SR introduces significant clinical advantages.


References

[1] MarketDataForecast. (2023). Global respiratory drug market analysis.
[2] EvaluatePharma. (2023). Respiratory therapeutics pipeline and patent expiry analysis.
[3] Statista. (2022). Theophylline market revenue in the United States.
[4] GlobalData. (2022). Respiratory drug market trends and forecasts.
[5] FDA. (2017). Bioequivalence guidelines for generic oral drugs.

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