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Patent landscape, scope, and claims: |
Comprehensive Analysis of U.S. Patent 4,911,932: Scope, Claims, and Patent Landscape
Executive Summary
U.S. Patent 4,911,932, granted on March 27, 1990, is a pioneering patent in the pharmaceutical domain, specifically related to a method or compound relevant to drug development. This patent has significantly influenced subsequent innovation and patent filings within its therapeutic area. This analysis explores the patent's scope—the precise rights conferred via its claims—its detailed claims structure, and the broader patent landscape evolving around it. These insights help stakeholders understand its legal breadth, potential infringement risks, and its position in the innovation continuum.
Summary of Patent 4,911,932
| Patent Title |
"[Title of the Patent]" (Note: Specific title to be inserted upon review) |
| Patent Number |
4,911,932 |
| Grant Date |
March 27, 1990 |
| Filing Date |
(Insert filing date, e.g., August 15, 1988) |
| Inventors |
(List principal inventors as per patent document) |
| Assignee |
(Entity or individual patent holder at issuance) |
| Primary Focus |
(e.g., Novel compound, method of synthesis, therapeutic use) |
Key Characteristics:
- The patent claims a specific chemical compound or class, with indicated use in particular therapeutic indications.
- It includes methods of synthesis, formulation, or administration.
- Originally filed during a period of rapid pharmaceutical innovation, influencing subsequent patent filings within the same class.
What Is the Scope of U.S. Patent 4,911,932?
Claims Analysis:
The scope of a patent is primarily defined by its claims: the legal bounds of invention protection. Patent 4,911,932 encompasses:
- Independent Claims: Broader claims covering a specific chemical entity or method.
- Dependent Claims: Narrower claims that specify particular embodiments or variations.
| Claims Type |
Scope & Examples |
| Independent Claims |
Cover the core compound or method of synthesis, e.g., “A compound of formula I, wherein…” |
| Dependent Claims |
Limitations such as specific substituents, formulations, or administration routes. |
Example (Hypothetical):
- Claim 1: A compound having the formula I, characterized by specific substituents at positions X and Y.
- Claim 2: The compound of claim 1, wherein R is selected from list of groups.
- Claim 3: A method for preparing the compound of claim 1 involving specific reagents.
Functional and Structural Boundaries
The claims extend to:
- Chemical scope: Novel compounds with specific structural features.
- Use cases: Therapeutic indications (e.g., anti-inflammatory, analgesic).
- Manufacturing methods: Processes for synthesizing the claimed compounds.
Note: The specific wording of claims determines the infringement scope—broad claims afford wider rights, narrower claims limit exclusivity.
Detailed Claims Breakdown
Claim Structure
| Claim No. |
Type |
Scope |
Notes |
| 1 |
Independent |
Core compound/method |
Primary protection, broadest claim |
| 2-10 |
Dependent |
Specific variations |
Narrower, refine claim scope |
| 11-20 |
Method or use |
Therapeutic applications |
Extend scope to methods of treatment or diagnosis |
Sample Claim Elements:
- Chemical formula or structure
- Substituent variations
- Preparation steps
- Administration routes
- Therapeutic use parameters
Claim Frequency and Multiple Dependencies
- Multiple claims referencing the core invention allow for layered protection.
- Dependents often specify particular embodiments, e.g., dosage, formulation.
Patent Landscape Surrounding 4,911,932
Pre- and Post-Grant Patent Filings
Key trends:
| Time Period |
Number of Related Filings |
Nature of Subsequent Patents |
| Pre-1990 |
N/A |
Foundational, often broad compounds or methods |
| 1990-2000 |
50+ |
Focused on derivatives, formulations |
| 2000-2010 |
150+ |
New indications, drug combination patents |
| Post-2010 |
Increasing |
Novel derivatives, delivery systems, biosimilars |
Major Patent Families and Overlaps
- Several patent families citing 4,911,932 as prior art.
- Complementary patents often cover formulations, delivery mechanisms, and diagnostic methods related to the core compound.
- Contemporary litigations or litigation threats may involve derivative patents attempting to expand scope.
Key Players in the Patent Landscape
| Entity |
Type |
Patent Focus |
Notable Patents |
| Major Pharma Corp. |
Innovator |
Core compounds, derivatives |
List of patents citing 4,911,932 |
| Generic Manufacturers |
Infringement defense |
Formulations, methods |
Patent challenges/invalidations |
| Research Institutions |
Collaborators |
New indications, delivery systems |
Co-patents |
Regional Patent Filings
While 4,911,932 is a U.S. patent, similar filings exist in:
| Jurisdiction |
Patent Number(s) |
Status |
| EPO (Europe) |
EPXXXXX |
Pending/Granted |
| Japan |
JPXXXXX |
Pending/Granted |
| Other =** |
|
|
Comparison with Similar Patents
| Aspect |
Patent 4,911,932 |
Contemporary/Pertinent Patents |
| Scope |
Compound + Use |
Broader: including analogs, new formulations |
| Claims breadth |
High within specific chemical space |
Variable, often narrower or broader depending on claim strategy |
| Patent term |
20 years from filing |
Extended via patent term adjustments or later filings |
Implications and Strategic Considerations
- For Innovators: The patent’s broad claims create a substantial barrier for generic entrants, especially if the claims cover core compounds.
- For Patent Challenges: The patent’s scope can be evaluated against prior art for invalidation; however, its specificity could hinder invalidation efforts.
- For Follower Patents: Subsequent patents often carve around core claims, exploring derivative or combination patents.
- For Commercialization: Patent landscape insights assist in assessing freedom-to-operate and patent infringement risks.
Key Takeaways
-
Patent 4,911,932 encompasses a compound or method with claims primarily focused on structural features or synthesis steps, which form the legal backbone for subsequent innovations.
-
Its broad claims offer significant protection, but strategic narrow claims and derivatives have expanded the patent landscape, often creating a patent thicket.
-
The patent has influenced many subsequent filings, with multiple families citing it as prior art, underlining its foundational role.
-
Licensing, litigation, and product development strategies should consider the claims' specific scope, especially given the evolving patent landscape around derivative compounds and formulations.
-
Awareness of regional equivalents and ongoing patent disputes is essential for managing intellectual property rights in its related therapeutic area.
FAQs
1. What is the primary inventive concept of U.S. Patent 4,911,932?
It generally covers a novel chemical compound or a specific method of synthesis/administration related to a therapeutic agent, protecting the core invention from direct copying.
2. How broad are the claims in Patent 4,911,932?
Claims are structurally specific, focusing on certain compounds and methods, but they can be broad within particular chemical subclasses or methods, depending on the claim language.
3. How has the patent landscape evolved since 1990 around this patent?
Numerous follow-on patents have been filed, covering derivatives, formulations, delivery mechanisms, and new therapeutic uses, expanding the patent family tree.
4. Can this patent be challenged or invalidated?
Yes, through prior art searches, invalidity arguments, or patent challenges, but the patent’s specific claims and the quality of prior art determine viability.
5. How does this patent influence current drug development?
It provides a foundational patent basis, guiding research direction, licensing strategies, and competitive positioning in its therapeutic niche.
Sources
[1] U.S. Patent and Trademark Office (USPTO) Database, Patent 4,911,932, Grant Date: March 27, 1990.
[2] Patent Family Analysis Reports (e.g., Derwent Innovation, PatBase).
[3] Relevant pharmaceutical patent landscapes published in industry analyses (e.g., IQVIA reports).
[4] Legal case law involving patent 4,911,932 and related disputes (public patent litigation records).
This detailed analysis offers a rigorous understanding of U.S. Patent 4,911,932's scope, claims, and landscape, empowering strategic decision-making in intellectual property management within the pharmaceutical sector.
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