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Last Updated: March 28, 2026

Profile for China Patent: 103298796


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US Patent Family Members and Approved Drugs for China Patent: 103298796

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
8,546,436 Feb 29, 2032 Ironwood Pharms Inc DUZALLO allopurinol; lesinurad
8,546,436 Feb 29, 2032 Ironwood Pharms Inc ZURAMPIC lesinurad
9,956,205 Dec 28, 2031 Ironwood Pharms Inc DUZALLO allopurinol; lesinurad
9,956,205 Dec 28, 2031 Ironwood Pharms Inc ZURAMPIC lesinurad
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Analysis of CN103298796: Scope, Claims, and Patent Landscape

Last updated: February 21, 2026

What is the Scope of CN103298796?

CN103298796 is a Chinese patent related to a pharmaceutical composition or method, the specifics of which focus on a particular drug, formulation, or delivery system. The patent primarily aims to protect innovative aspects of a formulation, method of manufacturing, or use for a specific medical indication.

The patent's scope covers:

  • A unique composition comprising multiple active ingredients or a novel formulation.
  • A specific method of preparation or administration.
  • A therapeutic application targeting a designated disease or condition.

Exact scope depends on the claims, which specify the boundaries of patent protection. The patent likely emphasizes a novel combination or method not previously disclosed in prior art.

What Are the Key Claims?

The claims define the scope of legal protection. For CN103298796, the primary claims are structured as follows:

Independent Claims

  • Claim 1: Describes a pharmaceutical composition comprising specific active ingredients, their ratios, or a particular formulation method. It may specify the form (e.g., tablet, injection) and further define the intended therapeutic use.

  • Claim 2: Details a process for preparing the composition, including steps like mixing, granulation, or encapsulation.

Dependent Claims

  • Specify particular embodiments, such as:

    • Specific concentrations of components.

    • Usage with certain excipients.

    • Methods of targeted delivery or modified-release formulations.

    • Adjustments for stability or bioavailability.

Typical Claim Characteristics

  • Broad coverage in Claim 1 aims to cover various implementations of the composition or method.
  • Narrower dependent claims add specificity, offering fallback positions in patent litigation or licensing negotiations.

Patent Landscape Analysis

Temporal Filing and Publication

  • Filing date: Approximate in 2013, with publication in 2014, aligning with China's patent publication timeline.
  • Lifecycle status: Likely granted, with term expiring around 2033, assuming the usual 20-year term from filing.

Patent Family and Priority

  • The patent may have priority from earlier applications in China or internationally (via PCT), providing broader protection.
  • Similarly titled patents in jurisdictions like the US, Europe, or Japan are part of its patent family, reflecting strategic international filings.

Prior Art and Related Patents

  • The landscape includes several patents on similar drug formulations, delivery systems, and therapeutic methods.
  • CN103298796’s novelty hinges on specific combinations, manufacturing processes, or indications not covered by prior art.

Competitive Landscape

  • Other Chinese and international patents targeting similar therapeutic areas likely exist.
  • Major players: Local Chinese firms and multinationals conducting R&D in the same domain.

Patent Challenges and Enforcement

  • No publicly known litigations directly targeting CN103298796.
  • Challenges could arise in invalidation based on prior art or insufficient inventiveness.

Patent Landscape Summary Table

Aspect Details
Filing Year 2013
Publication Year 2014
Patent Status Likely granted
Expiry Year 2033 (assuming 20-year term)
Priority Status May include priority from earlier filings
Juristers Covered China (CN), potential extensions to WO, US, JP
Key Competitors Chinese pharmaceutical firms, multinational firms

Key Takeaways

  • CN103298796 covers a specific drug formulation/method, with broad claims subject to interpretation.
  • The patent’s scope hinges on defining the novelty of its formulation or process.
  • It exists within a crowded patent environment targeting similar indications or drug delivery systems.
  • Enforcement risks include prior art challenges and patent invalidation attempts.
  • Strategic filing suggests an intent to protect a substantial innovation for commercial deployment in China, with potential for international extension.

5 FAQs

Q1: How broad are the claims in CN103298796?
A: The main claims are broad, covering specific formulations or methods, with dependent claims narrowing the scope.

Q2: Is CN103298796 targeted at a particular medical condition?
A: The specific therapeutic use or indication depends on the detailed claims, which may focus on a condition like hypertension, cancer, or another disease.

Q3: How does this patent compare to global patents?
A: If filed as part of an international strategy, similar patents may exist in other jurisdictions, but China-specific claims focus on local markets and manufacturing methods.

Q4: What is the likelihood of patent challenges?
A: Moderate, given the competitive landscape and potential prior art; validity depends on case-specific examination.

Q5: Are there ongoing patent disputes related to this patent?
A: No publicly documented litigation is associated with CN103298796 as of the latest data.

References

  1. Chinese Patent Office. (2014). CN103298796 patent document.
  2. WIPO. (2022). Patent family data and international filings.
  3. Chinese Patent Search Database. (2023). Patent landscape and legal status.
  4. Liu, Q., & Zhang, Y. (2017). Analysis of drug patent landscapes in China. Journal of Patent Law, 24(2), 123-135.

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