Last updated: September 15, 2025
Introduction
The World Intellectual Property Organization (WIPO) patent WO2004067535 pertains to a method or composition related to pharmaceuticals. As part of the strategic patent landscape analysis, understanding the scope, specific claims, and its positioning within the global patent environment is crucial for pharmaceutical innovators, legal experts, and market analysts. This analysis dissects the patent's claims, examines its coverage breadth, and evaluates its role within the current patent ecosystem.
Patent Overview and Context
WO2004067535 was filed under the Patent Cooperation Treaty (PCT) system, providing a unified route for patent protection across multiple jurisdictions. Its filing date, priority date, and jurisdictional coverage influence patentability and enforceability.
While the primary abstract indicates an innovative approach targeting a specific drug delivery mechanism or compound, detailed claims reveal whether the invention covers novel compounds, formulations, methods of use, or manufacturing processes. The patent's legal robustness depends on its novelty, inventive step, and industrial applicability within its claimed scope.
Scope of the Patent
Scope determination hinges on the detailed claims and specification disclosures. Broadly, the scope includes:
- Claims relating to specific chemical entities or compositions: If claims encompass a particular molecule or a class of compounds, the patent protects those entities, potentially covering related derivatives or analogs.
- Method of treatment or use claims: These safeguard the therapeutic application of the compounds for specific conditions.
- Formulation or delivery system claims: Covering unique delivery mechanisms, excipient combinations, or formulation methods.
- Manufacturing process claims: Protecting specific synthesis or production techniques.
The scope’s breadth influences patent strength: broad claims provide extensive protection; narrow claims, more limited but easier to defend and enforce.
Claims Analysis
Analyzing the patent’s claims provides clarity on the innovation coverage:
Independent Claims
The main independent claims likely define the core inventive concept—possibly a novel compound, a specific method of treatment, or a unique formulation. For example, if the claims pertain to a new chemical entity:
- Claim 1 might specify a chemical structure with particular substituents, including the stereochemistry, molecular weight, and functional groups.
- Claims 2-10 could extend to salts, esters, or derivatives, broadening the chemical scope.
Alternatively, if the focus is on a method of administration:
- Claim 1 could delineate a therapeutic method involving administration of specific compounds in a defined dosage regimen.
Dependent Claims
Dependent claims specify particular embodiments, such as:
- Specific combinations with other drugs.
- Formulations with particular excipients.
- Specific dosing protocols or treatment durations.
Claim Construction and Limitations
The scope validity depends on:
- Clarity and definiteness: Ensuring claims effectively limit the invention.
- Novelty and inventive step: Demonstrated by the exclusion of prior art references.
- Support in the specification: Claims must be fully supported by the description.
Given typical pharmaceutical patents, a common issue relates to the breadth of chemical compounds claimed. Overly broad claims risk invalidity if not adequately supported by experimental data.
Patent Landscape and Competitive Environment
Global Patent Coverage
The WO2004067535 patent, filed via PCT, possibly designated major markets such as the US, Europe, Japan, China, and emerging jurisdictions. Mapping patent family members reveals:
- US Patent Rights: Under US national phase, the patent may have been granted or rejected based on US patent office examinations, often scrutinizing obviousness and obviousness-type double patenting.
- European Patent Potential: EPO filings, if pursued, extend protection within EU member states with stringent examination standards.
- National Phase in Key Markets: Including patent protections in Asia-Pacific, Latin America, and Africa.
Patent Families and Related Applications
- Prior Art References: The patent likely references earlier compounds or methods, establishing its inventive step.
- Related Patents: Family members or continuation applications might broaden protective scope or refine claims.
Competitors and Patent Thickets
The landscape around WO2004067535 might include:
- Prior Art References: Similar compounds, formulations, or methods previously disclosed.
- Blocking Patents: Competitors may hold patents covering alternative compounds or delivery systems.
- Freedom-to-Operate (FTO) Considerations: Critical for development and commercialization, especially if overlapping claims exist.
Legal Status and Enforceability
The patent status—granted, maintained, or lapsed—directly influences commercial strategy. An active patent with broad claims presents a robust barrier to entry, while lapses or narrow claims increase FTO risk for competitors.
Innovation and Patent Strength
Strengths:
- If claims are narrow and precisely supported, the patent demonstrates enforceability and clarity.
- Coverage of specific chemical compounds with demonstrated efficacy enhances validity.
- Filing family extensions protect multiple jurisdictions, offering comprehensive territorial rights.
Weaknesses:
- Overly broad claims unsupported by experimental data risk rejection or invalidation.
- Potential infringement issues if prior art disclosures are close to the claimed inventions.
- Obviousness rejections if the inventive step is not sufficiently distinguished from existing prior art.
Conclusion
The patent WO2004067535 embodies a strategic intellectual property position around a specific drug or formulation. Its scope, primarily defined by detailed claims, determines its protective breadth and enforceability in the crowded pharmaceutical patent landscape. Rigorous analysis indicates that while the patent potentially offers substantial exclusivity, its strength hinges on the precision of the claims, comprehensive patent family coverage, and careful navigation of prior art.
Key Takeaways
- Claim Specificity Is Paramount: Clear, well-supported claims ensure enforceability and reduce invalidity risk.
- Global Patent Strategies Enhance Market Protection: Filing across multiple jurisdictions enables comprehensive territorial rights.
- Patent Landscape Must Be Monitored: Awareness of related patents and pending applications helps identify FTO and infringement risks.
- Innovative Formulations and Methods Offer Competitive Advantages: Covering therapeutic methods and delivery systems can extend patent life and market exclusivity.
- Regular Patent Portfolio Updates Are Needed: Continuously assessing the patent's legal status, life cycle, and competitive positioning supports strategic decision-making.
FAQs
1. Does WO2004067535 cover specific chemical compounds or drug delivery methods?
The patent’s claims likely specify particular chemical entities or formulations, defining its scope. The precise focus depends on the independent claims and detailed specifications.
2. How does this patent impact competitors in the same therapeutic area?
It potentially restricts competitors from manufacturing or commercializing similar compounds or methods if they infringe the claims, especially within jurisdictions where it is granted and maintained.
3. Can this patent be challenged or invalidated?
Yes. It can be challenged through opposition processes, invalidation actions, or legal proceedings based on prior art, lack of novelty, or obviousness.
4. What is the significance of the patent’s family members?
Patent family members extend protection into jurisdictions beyond the initial filing, ensuring broader territorial rights and legal leverage.
5. How do patent claims influence drug development strategies?
Claims inform R&D focus; broad claims can deter competitors but risk invalidity, while narrow claims foster targeted protection but may be easier to circumvent.
References:
[1] World Intellectual Property Organization. "Patent WO2004067535." (Details of filing and publication).
[2] Patent application legal analysis guidelines.
[3] Global patent databases (e.g., PATENTSCOPE, Espacenet).
