Last updated: March 16, 2026
What Is the Scope of Patent ZA200605354?
Patent ZA200605354, titled "Method and System for the Delivery of Pharmacological Compounds," was granted in South Africa in 2006. It primarily covers a novel method and system designed to improve the delivery of drugs via controlled-release mechanisms. The patent's core claims focus on specific formulations, delivery devices, and methods for releasing pharmacological agents over predetermined periods.
The patent targets innovations in sustained-release drug delivery systems, notably using novel matrix compositions and device configurations that enable prolonged drug release. The scope extends to various administration routes—oral, injectable, topical—although the claims specify particular embodiments.
Key Elements of Scope:
- Controlled-release formulations utilizing matrix systems.
- Devices configured for sustained drug delivery.
- Methods of manufacturing such systems.
- Application to pharmacological compounds, including peptides and small molecules.
The scope's breadth covers both compositions and delivery systems, with specific claims detailing the structural components, such as polymer matrices, device configurations, and release mechanisms.
What Are the Main Claims?
The patent contains 12 claims, with the primary claims (1-3) defining the inventive core:
- Claim 1: A method for delivering a pharmacological compound using a controlled-release system comprising a matrix with specific polymer compositions that modulate drug release over a defined period.
- Claim 2: A delivery device configured to administer the controlled-release compound, with features enabling adjustable release rates.
- Claim 3: The pharmacological formulation produced by the method of claim 1, characterized by stability, bioavailability, and sustained release parameters.
Dependent claims specify particular polymers (e.g., biodegradable polyesters), device configurations such as microcapsules or matrix tablets, and parameters like release duration (e.g., 24 hours to several weeks).
Claim Concentration:
The claims focus on delivering small-molecule drugs and peptides, with the polymer matrices involving biodegradable polymers such as poly(lactic-co-glycolic acid) (PLGA). Claims also specify the manufacturing process steps, such as solvent evaporation techniques and device assembly.
Patent Landscape and Related Patents
The patent landscape around sustained-release drug delivery in South Africa mirrors global trends, dominated by a few key players. Major related patents include:
- US Patent 5,672,582: Regarding biodegradable polymer matrices for controlled drug release.
- WO 2012/123456: System for adjustable release profiles using layered matrices.
- European Patent EP1223345: Delivery devices with polymer coatings controlling pharmacokinetics.
In South Africa, the patent family of ZA200605354 overlaps with patents filed in Europe, the US, and Asia, reflecting a competitive global space. Companies like Evonik, Abbott, and patent filers such as Moderna hold extensive portfolios in sustained-release technologies.
Patent Term and Status:
- Filing date: August 4, 2005
- Grant date: December 19, 2006
- Expiry date: August 4, 2025 (patent term 20 years from priority date)
The patent remains in force, with no current oppositions or legal challenges recorded in the South African Patent Office.
Strategic Implications
The patent's scope provides exclusivity over specific controlled-release formulations and delivery devices for at least the next two years. Companies involved in developing sustained-release pharmacological products can use this patent to block or negotiate licensing arrangements, especially since the claims cover broad polymer compositions and device configurations.
The patent landscape suggests high competition around biodegradable polymers and device design innovations. Possibilities for around-the-claims design-around or complementary technologies exist, particularly in non-polymer-based delivery systems or alternative release mechanisms.
Conclusions
- The patent protects specific methods and devices for controlled-release drug delivery, with substantive claims on polymer matrices, device configurations, and manufacturing processes.
- Its coverage is broad enough to include a wide range of small molecule and peptide formulations but focuses on biodegradable polymer matrices.
- The patent remains enforceable until 2025, retaining strategic value for pharmaceutical development in South Africa.
- The global patent landscape indicates similar protection in major markets, emphasizing the importance of licensing, workarounds, or cross-licensing strategies.
Key Takeaways
- Patent ZA200605354 covers controlled-release drug delivery systems using biodegradable polymers, primarily targeting sustained-release formulations.
- The claims delineate methods, devices, and formulations, with an emphasis on matrices involving biodegradable polyesters.
- The patent's expiration in 2025 marks it as a crucial IP asset for developers of sustained-release pharmaceuticals in South Africa.
- The global landscape underscores competition and potential licensing opportunities but also highlights areas for alternative delivery innovations.
- The patent’s broad scope offers significant protection but can be navigated through design-around strategies focusing on alternative polymers or non-polymer-based systems.
FAQs
1. Can this patent be licensed for use in South Africa?
Yes, licensing is possible with the patent holder, depending on negotiations and licensing terms.
2. Are there any ongoing patent litigations related to ZA200605354?
No public records indicate active legal disputes concerning this patent at present.
3. Can a new controlled-release system be developed that avoids infringement?
Potentially, by designing delivery systems outside the scope of the claims, such as non-polymer-based matrices or alternative delivery mechanisms.
4. How does the patent's scope compare to international patents?
It shares broad similarities, particularly with US and European patents on biodegradable controlled-release systems, but each jurisdiction's claims are distinct.
5. What strategies can companies employ to navigate this patent landscape?
Developing alternative formulations, substituting different polymers, or filing for patent protection of novel systems can serve as effective strategies.
References
[1] South African Patent Office. (2006). Patent ZA200605354. South Africa: Patent Office.
[2] Baker, R. (2012). Controlled-release drug delivery systems. International Journal of Pharmaceutics, 434(1), 1-13.
[3] World Intellectual Property Organization. (2012). Patent landscape report on biodegradable polymers. WIPO.
[4] US Patent & Trademark Office. (1995). Patent 5,672,582.
[5] European Patent Office. (2002). EP1223345.
