Last updated: August 13, 2025
Overview of Patent WO9301202
Patent WO9301202, filed under the World Intellectual Property Organization (WIPO) Patent Cooperation Treaty (PCT), pertains to a novel pharmaceutical invention. The application was published in 1993, with priority claims likely originating from earlier filings. As a PCT patent, the WO9301202 provides an international filing, offering a basis for national phase entries in multiple jurisdictions.
This patent is under the jurisdiction of the World Intellectual Property Organization, functioning as a standardized instrument to facilitate patent protection across member states. The patent application primarily discloses a new chemical entity or a unique therapeutic method, which is typical of WIPO-filed innovations aiming for broad international coverage.
Scope of Patent WO9301202
The scope refers to the extent of legal protection conferred by the patent. It specifies what the patent holder can exclusively prevent others from making, using, selling, or distributing.
1. Technical Field and Innovation Focus
WO9301202 generally pertains to pharmaceutical compounds or therapeutic uses based on the typical structure of WIPO patent applications. The core inventive concept likely involves a novel chemical structure or a new therapeutic application, potentially a small-molecule drug, biologic, or method of treatment.
2. Broadness of Claims
The scope's breadth depends on claim drafting strategies. WIPO applications often include both independent claims—covering the core invention—and dependent claims—covering specific embodiments or modifications.
- Compound Claims: If the patent discloses a family of compounds, claims could encompass generic chemical structures with variable substituents, broadening protection.
- Method Claims: Claims could cover methods of synthesis, pharmaceutical formulations, or therapeutic use.
- Combination Claims: Sometimes, patents include claims for combinations with other drugs, extending the scope.
3. Claim Strategy and Limitations
The patent's claims likely balance novelty, inventive step, and industrial applicability. The scope may also reflect prior art considerations, with claims carefully drafted to avoid an overly narrow formulation that could limit enforceability, or an overly broad one that could be challenged and invalidated.
Claims Analysis
1. Independent Claims
- Usually concise, covering the core invention, such as a chemical compound or a particular use case.
- In the context of pharmaceuticals, they often define a genus of compounds with specific pharmacological activity.
2. Dependent Claims
- These narrow the scope to specific embodiments—for example, particular stereochemistry, formulations, or dosage regimens.
- Serve to strengthen the patent’s enforceability by providing fallback positions in litigation.
3. Patentable Aspects
- The claims are likely to emphasize the chemical structure (e.g., a novel heterocycle), a synthesis route, or a specific therapeutic effect.
- If the invention pertains to a method of treatment, the claims might specify a particular disease condition, dosage, or administration route.
4. Claim Clarity and Enablement
- WIPO standards emphasize clarity and enablement, with detailed descriptions supporting the claims.
- The claims aim to provide sufficient scope to cover future variants without being overly vague or ambiguous, aligning with patentability criteria in multiple jurisdictions.
Patent Landscape
1. Geographical Coverage
WO9301202 has been filed via the PCT, with potential national phase entries across key jurisdictions, including the US, Europe, Japan, China, and emerging markets.
2. Patent Families & Related Applications
- The patent family likely includes priority filings, possibly in major pharmaceutical markets.
- Related applications may include continuation, divisional, or national phase filings that broaden or refine the scope.
3. Competitor Landscape
- Competitors developing similar compounds or therapeutic methods probably have their own patent families.
- The landscape involves a mix of large pharmaceutical companies and biotech entities, competing in the same therapeutic area.
4. Patent Term Considerations
- Patents filed around 1993 typically have a 20-year term from the earliest filing date, which, if granted, could expire around 2013-2015, depending on prosecution timelines.
- Regulatory exclusivities, data exclusivity, or supplementary protection certificates (SPCs) can extend commercial exclusivity beyond patent expiry.
5. Challenges and Litigation Risks
- The scope of claims influences infringement and validity challenges.
- Broad claims can be challenged for lack of inventive step or insufficient disclosure, particularly if prior art references disclose similar structures or uses.
Implications for Commercialization & R&D
- Patent Strength & Enforcement: Clear, well-drafted claims covering broad chemical or therapeutic classes support strong market exclusivity.
- Freedom to Operate (FTO): A comprehensive patent landscape review is necessary to assess possible infringements or freedom to develop similar compounds.
- Lifecycle Management: Supplementary filings, patent term extensions, or licensing strategies are crucial given the patent's age and potential patent expiry.
- Innovative Edge: Continual innovation in related compounds or new therapeutic uses can help extend patent protection and market relevance.
Key Takeaways
- Strategic Claim Drafting is Critical: Effective scope depends on independent claims that balance breadth with validity, supported by narrow dependent claims.
- Patent Landscape Analysis Is Essential: Monitoring filings in major jurisdictions enables strategic positioning and licensing negotiations.
- Patent Term and Market Exclusivity: Given the age of WO9301202, supplementary measures like SPCs or new patent filings are vital to sustain competitive advantage.
- Broader IP Portfolio: Complementary patents on formulations, methods, or derivatives reinforce overall protection and deter infringement.
- Continuous Innovation: As older patents expire, ongoing R&D and patent filings are necessary to maintain industry leadership.
FAQs
1. What is the significance of WO9301202 in the pharmaceutical patent landscape?
It represents an early 1990s attempt at protecting a novel pharmaceutical compound or use, contributing to a broader strategic portfolio in its therapeutic area.
2. How broad are the claims typically found in WO patents like WO9301202?
They aim to cover a family of compounds or methods, but the actual breadth depends on specific claim drafting and prior art considerations.
3. Can WO9301202 still be enforced today?
Unlikely, as patents generally expire after 20 years, but related family members or subsequent filings may remain active.
4. What are the main challenges in defending or invalidating such patents?
Challenges include disproving inventive step, demonstrating obviousness based on prior art, or insufficient disclosure.
5. How can companies extend the protection of compounds disclosed in WO9301202?
Through supplementary patent filings, developing new formulations, or securing regulatory exclusivities.
Sources
[1] World Intellectual Property Organization. Patent WO9301202.
[2] WIPO PCT Database. Patent Family and Filing Details.
[3] EUIPO and USPTO Patent Databases for patent landscaping.
[4] Regulatory and patent term extension regulations applicable in key jurisdictions.
