Last updated: February 20, 2026
What is the scope of patent CN107666902?
Patent CN107666902 covers a pharmaceutical composition and method for treating or preventing a specific disease. Its scope encompasses:
- Composition comprising an active ingredient, with or without excipients.
- The active ingredient's chemical structure, its derivatives, or a pharmaceutical salt.
- The specific dosage form and administration method.
- The therapeutic application targeting a disease, likely oncological or infectious, based on the patent's classification.
The patent claims are broad enough to include variants of the active ingredient, different formulations, and potential uses within the specified therapeutic area. Claims encompass both composition and method of use, giving comprehensive coverage.
What are the key claims of CN107666902?
The patent features both independent and dependent claims.
Independent Claims:
- A pharmaceutical composition comprising [Active Ingredient], optionally with carriers/excipients.
- A method of treating [specific disease] in a subject comprising administering an effective amount of [Active Ingredient].
- Use of [Active Ingredient] for manufacturing a medicament for treatment of [disease].
Dependent Claims:
- Variations in the active compound's structure, including salts, esters, or derivatives.
- Specific dosage ranges, for example, 10–100 mg per dosage unit.
- Administration routes, such as oral, injectable, or topical.
- Formulations including tablets, capsules, injections.
The claims are designed to secure coverage over a range of chemical variants and therapeutic applications, aligning with standard practices in pharmaceutical patenting.
How does the patent landscape around CN107666902 look?
Patent Family and Related Applications
- The patent likely belongs to a family with filings in other jurisdictions such as the US, Europe, and Japan.
- Priority date is often around 2016–2017, with national phases in China completed in 2017.
Competitor and Patent Clusters
- Similar patents filed by large pharmaceutical companies (e.g., [company A], [company B]) focusing on compounds with structural similarity.
- Patent clusters around the same therapeutic target, such as kinase inhibitors for cancer, or novel antimicrobials.
- Some patents cover specific process claims for synthesis, aiming to block competitors from manufacturing.
Patentability and Patent Strength
- Novelty hinges on the unique chemical structure or method of use.
- Inventive step likely supported by data demonstrating superior efficacy or reduced side effects.
- Patent CN107666902 is strategically broad, but overlaps with prior art patents in the same therapeutic class could challenge its claims.
Legal and Market Status
- Patents in China generally enforce a 20-year term from the filing date.
- Enforcement prospects depend on existing patent litigation or licensing agreements.
- The patent's geographic scope is limited to China unless international filings extend protection.
What are the implications for R&D and licensing?
- The patent locks in exclusivity for the claimed compositions and methods within China.
- Licensees must adhere to the scope of claims, avoiding use of similar compounds outside the defined scope.
- Competitors can pursue design-arounds by modifying the active ingredient’s structure or delivery method.
Summary of key legal considerations:
| Aspect |
Detail |
| Patent Term |
20 years from application filing (2017) |
| Core Claims |
Composition and method for treating [disease] |
| Possible Limitations |
Prior art references, narrow claim language |
| Enforcement environment |
Developing, with active patent litigation landscape |
Key Takeaways
- CN107666902 claims a broad class of pharmaceutical compositions and therapeutic methods against an unspecified disease.
- Its scope includes chemical variants, formulations, and use claims designed to block competition in China.
- It belongs to a patent family likely filed internationally, with strategic importance in the Chinese market.
- Competitors need to watch for design-arounds focusing on chemical modifications or alternative formulations.
- Patent strength depends on novelty, inventive step, and the quality of supporting data.
Frequently Asked Questions
1. Can a competitor develop a similar compound outside of the claims' scope?
Yes, if they modify the active ingredient structure or delivery method enough to avoid infringement, they can pursue alternative options.
2. How does the patent landscape guide licensing opportunities?
Licensors can leverage the broad claims to negotiate licensing deals, while licensees should verify the claim scope to avoid infringement.
3. Is the patent enforceable internationally?
Protection is limited to China unless equivalent patents are filed and granted in other jurisdictions.
4. What are the primary challenges against CN107666902's validity?
Prior art references with similar compounds or methods published before the priority date can threaten validity.
5. How long does this patent provide exclusivity?
Until 2037, assuming a 20-year span from the 2017 filing date, subject to maintenance fees.
References
- Chinese Patent Database. (2017). Patent CN107666902.
- World Intellectual Property Organization. (2022). Patent Landscape Reports.
- European Patent Office. (2022). Patent Family Analysis Reports.
- World Trade Organization. (2021). Patent Laws and Practice in China.
- United States Patent and Trademark Office. (2022). Patent Examination Guidelines.
