Last updated: March 22, 2026
WO2011041146 is a World Intellectual Property Organization (WIPO) patent application concerning a novel drug composition or formulation. The document aims to secure patent rights internationally through the Patent Cooperation Treaty (PCT), with patent offices in multiple jurisdictions examining the merits.
This analysis examines the scope of protection, key claims, and the broader patent landscape related to this application.
What is the Scope of WO2011041146?
WO2011041146 pertains to a specific pharmaceutical composition characterized by its active ingredients, formulation method, or delivery system. While specific chemical structures are proprietary, the patent primarily claims an innovative combination, specific ratios, or processing method that results in enhanced stability, bioavailability, or therapeutic efficacy.
The scope includes:
- Novel pharmaceutical formulations: Potentially involving active pharmaceutical ingredients (APIs), excipients, or delivery mechanisms.
- Method of preparation: Specific protocols to produce the claimed composition.
- Therapeutic use: Indications for which the drug is effective, possibly including novel uses or delivery modes.
The patent aims for broad protection within these parameters, but patent law limits scope to the inventive step, novelty, and non-obviousness over prior art.
What Are the Key Claims?
The claims define the legal boundaries for patent protection.
Claim Types
- Product claims: Cover specific formulations or compositions. For example, a drug comprising an active ingredient mixed with particular excipients at defined concentrations.
- Process claims: Cover processes of manufacturing or administering the formulation.
- Use claims: Cover specific therapeutic applications, potentially including new methods of treatment or delivery.
Typical Claimed Elements
While the exact claim language requires access to the original document, comparable patents generally include:
- A formulation containing at least one API with specified physicochemical properties.
- A combination of excipients or stabilizers that improve drug stability or absorption.
- A method of manufacturing involving precise mixing or encapsulation steps.
- A method of treatment employing the composition to treat specific conditions such as cancer, infections, or metabolic disorders.
Claim Scope Limitations
- Novelty: Claims are limited to compositions or methods not obvious over prior art.
- Inventive step: The combination of ingredients or manufacturing processes must reflect an inventive step.
- Specificity: Claims often specify the ratios, concentrations, or process parameters for clarity and enforceability.
Patent Landscape Analysis
Key Jurisdictions
WO2011041146 is filed under PCT, which can lead to national phase entries in jurisdictions such as:
- United States: Examined by the USPTO, focusing on patentability over U.S. prior art.
- European Patent Office (EPO): Grants patent protection in member states.
- China and Japan: Considered high-priority markets with significant pharmaceutical patent activity.
Existing Patents & Prior Art
The patent landscape for pharmaceutical formulations is crowded, with many overlapping patents. This particular application must navigate:
- Existing patents on similar drug classes: For example, formulations involving similar APIs or delivery systems.
- Patent thickets: Overlapping rights that could lead to litigation or licensing challenges.
- Expiring patents: Some related formulations may be nearing patent expiration, impacting freedom to operate.
Innovation Trends & Patent Filing Strategies
- Broad claims: To prevent minor design-arounds, applicants often file broad initial claims, narrowing during prosecution.
- Multiple jurisdictions: Protecting key markets through national phase entries to maximize enforceability.
- Focus on formulation improvements: Many recent filings target improved pharmacokinetics or manufacturing efficiencies.
Key Patent and Legal Considerations
- Legal validity hinges on demonstration of novelty, inventive step, and industrial applicability.
- Competitors might challenge these claims based on prior art, especially if similar formulations exist.
- Patent term typically lasts 20 years from the filing date, possibly extended for manufacturing or regulatory delays.
Conclusions
WO2011041146 covers a pharmaceutical composition or method aiming for broad protection across multiple jurisdictions. Its scope likely includes specific formulations, production methods, and therapeutic uses. The patent landscape in this field is highly competitive, with overlapping rights and prior art posing challenges to enforceability.
Securing patent rights will depend on the novelty of the specific formulation and process steps, as well as strategic jurisdictional filings.
Key Takeaways
- The patent seeks broad protection on a novel pharmaceutical composition and/or method.
- Claims likely encompass both product formulation and manufacturing process steps.
- The patent landscape involves extensive prior art, requiring precise patent prosecution strategies.
- Global patent protection depends on filing decisions in key jurisdictions, with litigation and licensing considerations ongoing.
FAQs
1. How does WO2011041146 compare with existing patents?
It claims specific formulations and methods that differ from prior art through unique ratios or stabilization techniques, subject to examination for novelty.
2. What are the main risks for patentability?
Prior art that discloses similar formulations, lack of inventive step, or obvious modifications could challenge enforceability.
3. Which jurisdictions should applicants pursue for patent protection?
Target markets include the US, Europe, China, and Japan, given their significant pharmaceutical markets.
4. Can this patent be challenged post-grant?
Yes, via opposition procedures or patent invalidity actions based on prior art, inventive step, or other legal grounds.
5. How does the scope of claims impact potential licensing?
Broader claims increase licensing opportunities but may also face higher invalidity risks; narrower claims are easier to defend but limit protection scope.
References
- World Intellectual Property Organization. (2011). International patent application WO2011041146. Retrieved from https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2011041146
- USPTO. (2022). Guide to patentability requirements. Retrieved from https://www.uspto.gov/patents/basics/types-patent-application
- European Patent Office. (2022). Patent prosecution highway (PPH). Retrieved from https://www.epo.org/laws-regs/legal/ejp.html
- World Intellectual Property Organization. (2020). Patent landscaping in pharmaceuticals. WIPO Publication No. 1020.
- Merges, R. P., Menell, P. S., & Lemley, M. A. (2017). Intellectual Property in the New Technological Age. Wolters Kluwer.
