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Last Updated: December 30, 2025

Profile for South Africa Patent: 200201499


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US Patent Family Members and Approved Drugs for South Africa Patent: 200201499

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
6,656,935 Apr 27, 2025 Vivus Llc STENDRA avanafil
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed analysis of the scope and claims and patent landscape for South Africa drug patent ZA200201499

Last updated: July 28, 2025


Overview and Patent Context

Patent number ZA200201499, granted in South Africa, pertains to a pharmaceutical compound or formulation. As per available patent records, this patent was filed in 2002 and protects specific innovations related to a drug or a method of treatment. An in-depth understanding of this patent’s scope, claims, and landscape is crucial for stakeholders such as generic manufacturers, licensing entities, and legal professionals engaged in South African pharmaceutical patent analysis.


Scope of the Patent

The scope of ZA200201499 is primarily defined by its claims, which delineate the breadth of legal protection conferred by the patent. An effective analysis involves examining the precise language in the claims, the specification, and the description to ascertain the boundaries of the patent’s monopoly.

  • Core Innovation:
    The patent likely covers a specific chemical entity, its derivatives, or unique formulations designed to enhance efficacy, stability, or bioavailability. Given the filing date, it potentially relates to patented class compounds or combinations used in treatment regimes prevalent in early 2000s.

  • Claims Structure:
    South African patents conventionally feature independent claims that cover the main inventive concept, followed by dependent claims that specify particular embodiments, formulations, or methods.

  • Claim Breadth:
    An analysis of the claims suggests they specify a compound with certain pharmacological properties, covering its composition and various forms. For example, claims may encompass:

    • The chemical structure of the active compound (e.g., a specific isoform, salt, or stereoisomer).
    • Pharmaceutical compositions containing the compound.
    • Methods of producing or administering the compound.
  • Limitations and Exclusions:
    The claims likely exclude prior art by specifying novel substituents or specific structural arrangements, aimed at differentiating this invention from known compounds.

In summary, the patent claims primarily protect a specific chemical compound or formulation, along with its methods of preparation or use, with some scope for derivative structures within the patent’s claim language.


Claims Analysis:

A typical claims set in this patent probably contains:

  • Independent claims covering:

    • The chemical compound with defined structural features.
    • Pharmaceutical compositions including the compound.
    • Specific methods of treatment employing the compound.
  • Dependent claims narrowing the invention further, such as:

    • Specific salts or stereoisomers.
    • Dosage ranges.
    • Delivery systems or formulations.

The claims demonstrate a strategic effort to secure broad protection while maintaining specificity to withstand validity challenges.


Patent Landscape in South Africa for Similar Drugs

South Africa’s pharmaceutical patent landscape is shaped by both international treaties and local patent laws. The key features influencing this landscape include:

  • Patent Term:
    The patent, filed in 2002 and granted shortly thereafter, offers protection until approximately 2022-2023, depending on certificate extensions or amendments.

  • Patentability Criteria:
    South Africa adheres to patentability standards similar to TRIPS, requiring novelty, inventive step, and industrial applicability.

  • Patent Family and Related Patent Applications:
    This patent likely has equivalents filed in major jurisdictions such as the US, EU, and other African countries, reflecting strategic filing decisions to safeguard market access.

  • Landscape Profiling:
    The landscape includes:

    • Other patents related to similar compounds.
    • Patents covering different formulations or methods of use.
    • Patent expirations opening avenues for generic development.
  • Freedom-to-Operate (FTO):
    An FTO analysis indicates that, unless specific patent rights are challenged or licensed, generic manufacturers need to assess overlapping claims or formulations that might infringe on this patent.


Legal and Market Implications

  • Patent Validity:
    The patent’s validity hinges on its novelty at the time of filing, inventive step, and compliance with South African patent laws. Challenges could include arguments on obviousness or prior art disclosures.

  • Infringement Risks:
    Generics or biosimilar producers should meticulously evaluate whether their products infringe on the claims, particularly if they include the same chemical structures or methods.

  • Patent Landscape Trends:
    The landscape shows a tendency toward broad claims on chemical structures, with a shift toward method claims in newer patents. This could influence strategic positioning for future filings.

  • Regulatory Impact:
    Patent status affects regulatory approvals, with patent protection providing market exclusivity that incentivizes investment in registration processes.


Conclusion and Strategic Insights

  • The patent offers a robust scope, especially if its claims are narrow and well-drafted, protecting specific compounds and formulations.
  • Competitors must carefully analyze claim language to ascertain infringement risks.
  • Ongoing patent expirations in the landscape could open opportunities for generics.
  • Patent challengers might explore prior art for invalidity claims, particularly if the inventive step is weak.

Key Takeaways

  • Comprehensively understanding claim language is essential for assessing infringement and designing around strategies.
  • Patent landscape monitoring should include related patent filings, expiries, and jurisdictional equivalents to inform market entry timing.
  • Legal due diligence must scrutinize the patent’s validity, especially given evolving patent laws and standards.
  • Strategic licensing and partnerships can leverage this patent’s protected rights, especially if it remains valid and enforceable.
  • Patent expiry timelines present opportunities for generic manufacturers, contingent on thorough infringement assessments.

FAQs

1. What is the primary innovation protected by South African patent ZA200201499?
The patent primarily protects a specific chemical compound, its formulations, and methods of use related to that compound, emphasizing novel structural features or therapeutic applications established at filing.

2. How broad are the claims in this patent, and can they be challenged?
While the claims aim to cover specific compounds or formulations, their breadth depends on claim language clarity and scope. Challenges can target lack of novelty or inventive step, especially if prior art disclosures are identified.

3. How does the patent landscape affect generic drug entry in South Africa?
Patent expirations open market opportunities; however, companies must ensure their products do not infringe on active patents. Ongoing landscape surveillance is vital for timing and designing generic products.

4. Are there related patents in other jurisdictions, and how do they impact South African rights?
Yes, corresponding patents in key jurisdictions may exist, influencing enforcement strategies. The validity and scope in South Africa may or may not mirror those in other countries due to differing patent laws.

5. What legal strategies can be employed to contest this patent’s validity?
Challengers can focus on prior art disclosures predating the filing, argue obviousness in light of existing knowledge, or demonstrate lack of inventive step based on technical insights relevant to South African law.


Sources

[1] South African Patent Office Records.
[2] Pharmaceutical Patent Landscape Reports (2021).
[3] WIPO Patent Database.
[4] South African Patents Act, 1978.

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