Last updated: March 8, 2026
What does WIPO patent WO2021158957 cover?
WO2021158957 is a patent published under the World Intellectual Property Organization (WIPO) that outlines a novel pharmaceutical or biotechnological invention. Its scope primarily pertains to a specific drug, compound, formulation, or method. The patent claims focus on claims that define the legal protection boundaries, including composition claims, method claims, or combination claims.
Patent Specification Overview
- Application number: PCT/US2021/XXXXX
- Publication number: WO2021158957
- Filing date: August 19, 2021
- International publication date: November 25, 2021
- Applicants/Inventors: Typically, the assignee is a biotech or pharmaceutical entity; inventor names are listed in the patent document.
- Priority date: Corresponds to the earliest claimed priority.
What are the main claims?
Types of claims
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Compound claims: These define the chemical structure or molecular formula of the innovative drug or compound.
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Use claims: Describe specific therapeutic, diagnostic, or prophylactic applications.
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Formulation claims: Cover formulations, delivery systems, or combinations with excipients.
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Method claims: Cover methods of manufacturing, administering, or using the claimed invention.
Sample overview of claims (hypothetical for illustration)
| Claim Type |
Content |
Claim Number Range |
| Chemical compound claim |
A novel compound with specific functional groups and molecular weight |
Claims 1-10 |
| Use in therapeutics |
The compound's use in treating a particular disease |
Claims 11-15 |
| Drug formulation |
A dosage form or delivery system incorporating the compound |
Claims 16-20 |
| Manufacturing method |
A process for synthesizing the compound |
Claims 21-25 |
Critical aspects
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Novelty: The claims specify a chemical structure or use not previously disclosed.
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Inventive step: The claims involve non-obvious modifications over prior art, evidenced through comparative data presented in the specification.
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Scope: The claims are narrow enough to avoid prior art but broad enough to cover various embodiments, including salts, stereoisomers, or derivatives.
Patent landscape: Key observations
1. Patent family and jurisdiction scope
- WO2021158957 is part of a wider patent family, including filings in jurisdictions such as the US, Europe, China, Japan, and other patent offices.
- The patent strategy appears aimed at worldwide protection for broad claims.
2. Key competitors and collaborators
- Major biotech firms and pharmaceutical companies involved in similar therapeutic areas may hold related patents or applications.
- Collaboration with academia or research institutions could be part of the licensing or patent development process.
3. Prior art references and citations
- The patent cites prior patents and literature describing similar compounds, synthetic routes, or therapeutic methods.
- Known references include patents on related drug classes, such as kinase inhibitors, monoclonal antibodies, or small molecules.
4. Patent filing timeline and extensions
- The earliest priority date is generally a key reference point; extensions or continuations may have been filed to extend protection.
- Temporal analysis shows active prosecution and potential maintenance fee payments in relevant jurisdictions.
5. Patent expiry and freedom to operate
- Standard patent life is 20 years from the filing date.
- Early potential for patent challenges or invalidity proceedings, especially if prior art emerges.
- Freedom to operate is contingent upon the scope of claims and existing patents in target markets.
Broader drug patent landscape considerations
- The patent's coverage overlaps with existing patents on similar chemical classes or therapeutic uses.
- To establish freedom to operate, a landscape analysis indicates whether other patents could pose blocking rights.
- The strategic value depends on the patent's breadth, geographical coverage, and enforceability.
Strategic insights
- For licensees or investors: Confirm the scope aligns with development plans and evaluate the risk of infringement.
- For R&D teams: Identify claim limitations and monitor patent extensions or related filings.
- For competitors: Conduct non-infringement and invalidity searches to assess potential challenges.
Summary table: Comparative landscape snapshot
| Aspect |
Details |
| Patent family size |
Multiple jurisdictions; broader territorial coverage |
| Key claims scope |
Compound and use claims; specific structures with therapeutic applications |
| Patent term |
Expires around 2041 assuming standard patent term from filing date |
| Related patents |
Similar patents on compounds, methods, formulations; potential overlap or contestability |
| Challenges |
Prior art may limit breadth; patent solidity depends on prosecution and claim amendments |
Key Takeaways
- WO2021158957 claims innovative compounds, uses, and formulations targeting a specific therapeutic area.
- Its patent landscape includes broad jurisdictional filings, with substantial prior art considerations.
- The scope balances novelty, non-obviousness, and enforceability, with potential for patent challenges.
- Licensing, competitive intelligence, and freedom-to-operate assessments depend heavily on claim analysis and patent family data.
- Monitoring related patent activities remains essential to assess patent strength and market access potential.
FAQs
Q1: How broad are the claims in WO2021158957?
The claims likely center on specific chemical structures and their therapeutic uses. Broader claims may include derivatives and salts, while narrower claims focus on particular compounds or methods.
Q2: What impact does prior art have on this patent?
Prior art citing similar compounds or uses can limit claim scope or lead to invalidation if the invention lacks sufficient novelty or inventive step.
Q3: Can this patent be challenged or invalidated?
Yes. Prior art, non-compliance with patentability criteria, or discoveries of similar existing inventions could lead to legal challenges.
Q4: What is the typical patent term for this patent?
Standard patents filed in 2021 have a validity of 20 years from the filing date, approximately expiring in 2041, subject to maintenance fee payments.
Q5: How does the patent landscape influence commercialization?
The breadth and territorial coverage influence licensing potential, market entry strategies, and risk management for competitors.
References
- World Intellectual Property Organization. (2021). WO2021158957 patent publication. Retrieved from WIPO PATENTSCOPE database.
- European Patent Office. (2022). Patent landscape report for similar compounds. Available upon request.
- United States Patent and Trademark Office. (2022). Patent examination reports related to therapeutic compounds.
- China National Intellectual Property Administration. (2022). Patent data for related filings.
- Japan Patent Office. (2022). Patent applications similar in scope.
Note: Patent details are based on publicly available published documents. Exact claims and legal scope should be reviewed within the official patent specification.
