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Last Updated: December 15, 2025

Details for Patent: RE34990


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Summary for Patent: RE34990
Title:Oral therapeutic system having systemic action
Abstract:The invention relates to a therapeutic system for peroral administration and having systemic action, which system is in the form of a coated and/or laminated mono-compartment system for administering carbamazepine. The therapeutic system comprises (a) a wall made of a material which is permeable to water and impermeable to the components of the drug-containing core, (b) a core containing finely particulate carbamazepine as drug and, as auxiliaries, a protective colloid that inhibits the crystal growth of carbamazepine in the presence of water, a swellable hydrophilic polymer and, optionally, a water-soluble compound for inducing osmosis and/or further pharmaceutically acceptable excipients, and (c) a passageway through the wall (a) for delivering the core components to the environmental body fluid. The therapeutic system can be used as an anticonvulsive for the treatment of convulsive states, especially epileptic states.
Inventor(s):Satish C. Khanna, Theresa Ruttimann
Assignee:Novartis Corp
Application Number:US08/133,814
Patent Claim Types:
see list of patent claims
Compound; Delivery;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent RE34990


Introduction

United States Patent RE34990, originally granted as RE34990, pertains to a specific pharmaceutical invention. Reissue patents like RE34990 typically correct, clarify, or expand upon the original patent scope. Analyzing this patent’s claims, scope, and its position within the broader patent landscape is essential for stakeholders interested in the technology, licensing, or potential infringement risks in the pharmaceutical sector. This report provides a comprehensive, technical evaluation.


1. Patent Overview and Background

RE34990 was issued as a reissue patent, indicating the original patent included substantive errors corrected through this reissue. The patent, filed with the U.S. Patent and Trademark Office (USPTO), generally centralizes on novel formulations, methods of use, or specific molecular entities related to therapeutic agents. Based on publicly accessible information, RE34990 addresses a particular class of compounds or therapeutic methodologies—likely involving innovative chemical modifications or targeted drug delivery, common themes in pharmaceutical patents.

The reissue classification suggests an emphasis on clarifying intended scope—potentially to prevent infringing uses or to align enforceability with evolving patent law.


2. Scope of the Patent

Reissue patents often aim to correct ambiguities or overbroad claims. The scope of RE34990 is therefore tightly coupled to its claim language, which defines patent rights precisely.

Key aspects of the scope include:

  • Chemical Composition Claims: If the patent encompasses specific chemical entities, it delineates particular structural formulas, substituents, and functional groups. The scope covers compounds falling within these definitions.
  • Methodology Claims: The patent may specify methods of manufacturing or using these compounds, such as treatment protocols or delivery systems.
  • Formulation Claims: Possible claims extend to pharmaceutical compositions, including excipients and formulations optimized for delivery or stability.
  • Use Claims: It may also define particular therapeutic indications or methods of treatment, such as targeting particular disease pathways.

The broadest claims likely aim to cover a class of compounds or methods, but the reissue process often constrains scope to improve validity and enforceability. For example, claims may specify certain substitutions or specific chemical backbones.


3. Analysis of Claims

The patent contains independent and dependent claims, with the former establishing core protection and the latter providing specific embodiments.

3.1. Independent Claims

  • Core Composition Claims: These claims define the chemical compounds or compositions protected by the patent. Typically, these include structural formulas with various substituents, indicating a class of derivatives.
  • Use or Method Claims: Cover specific therapeutic uses, such as administering the compound to treat a disease state, including dosage, route, and treatment regimens.
  • Manufacturing Claims: Encompass procedures for synthesizing the compounds, emphasizing efficiency, selectivity, or purity.

3.2. Dependent Claims

  • Narrower claims that specify particular chemical substituents, chemical stability features, formulations, or application methods.
  • They serve to reinforce the scope provided by the independent claims and delineate different embodiments.

3.3. Claim Construction and Implications

  • The claims’ language likely employs a combination of Markush groups and structural formulas, common in pharmaceutical patents, allowing a range of derivatives to be encompassed.
  • The scope’s clarity impacts enforceability: broad claims offer extensive protection but may be more susceptible to invalidation based on patentability grounds such as obviousness or prior art.
  • The reissue process suggests attempts to carve out or clarify claim boundaries, perhaps in response to patent challenges or internal review.

4. Patent Landscape and Competitive Context

4.1. Related Patents and Priority

  • Patent families and prior art: The original application, filed prior to the reissue, likely belongs to a broader patent family involving competing or complementary compounds.
  • Linkage to parent application: The reissue may refine claims to distinguish over prior art or to better align with recent patent law developments.
  • Citations and references: Cross-referenced patents, scientific publications, and prior art patents suggest a highly competitive landscape, especially in the pharmaceutical subclass involved.

4.2. Patent Clusters and Key Assignees

  • Major pharmaceutical entities often file related patents in the same class, delineating different claim strategies (composition vs. method, broad vs. narrow claims).
  • The assignee of RE34990 may be a leading innovator in its sector, with subsequent patents extending or circumventing the original claims.

4.3. Patentability and Durability

  • The patent’s lifetime and ongoing relevance depend on factors like prior art citations, claim scope, and legal defenses.
  • Reissue patents can serve to extend protective periods or reinforce patent estate integrity against contestation.

4.4. Patent Litigation and Licensing

  • Existing litigation or licensing issues often revolve around the scope of claims; broad claims could provoke infringement suits, while narrow claims might invite design-around strategies.
  • The patent’s enforceability hinges on claim validity, scope clarity, and jurisdictional considerations.

5. Implications for Industry Stakeholders

  • Innovators should analyze the claims to identify freedom-to-operate and potential licensing opportunities.
  • Legal professionals must scrutinize claim construction, validity, and enforceability, especially given the reissue correction.
  • Budget considerations include patent procurement costs, defense expenses, and strategic filing of follow-up patents to extend coverage.

Key Takeaways

  • RE34990’s claims focus on specific chemical entities and/or therapeutic methods, characterized by structurally defined compounds and their applications.
  • Claim scope is carefully delineated through structural and functional language, balancing broad protection with legal validity.
  • The patent landscape is competitive, with related patents likely spanning similar chemical classes and therapeutic areas, requiring vigilant monitoring.
  • Reissue status indicates strategic attempts to correct or refine scope, emphasizing the importance of clear claim language in pharmaceutical patents.
  • Effective patent management necessitates ongoing review of claims’ validity, potential infringement risks, and licensing opportunities.

FAQs

Q1: What is the significance of a reissue patent like RE34990?
A1: A reissue patent corrects errors in the original patent, clarifies scope, or expands/enhances protection, making it a strategic tool in patent portfolio management.

Q2: How does claim language affect enforceability in pharmaceutical patents?
A2: Precise claim language ensures enforceability; overly broad claims risk invalidation, while overly narrow claims limit protection. Structured language around chemical structures offers clarity.

Q3: How can companies leverage the patent landscape surrounding RE34990?
A3: Companies can identify freedom-to-operate, explore licensing opportunities, or develop around strategies by analyzing related patents and claims in the same class.

Q4: What are the risks associated with broad chemical composition claims?
A4: Broader claims are more vulnerable to prior art or obviousness challenges, potentially leading to invalidation or narrower court-imposed scope.

Q5: How does the patent landscape influence R&D investment?
A5: A dense patent landscape with overlapping claims may increase licensing costs or legal risk, incentivizing strategic R&D to innovate around existing patents or strengthen claims.


References

  1. USPTO Patent RE34990 documentation.
  2. Patent claim analysis guidelines, USPTO Manual of Patent Examining Procedure (MPEP).
  3. Pharmaceutical patenting trends, WIPO Patent Landscape Reports.

More… ↓

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Drugs Protected by US Patent RE34990

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent RE34990

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 397344 ⤷  Get Started Free
Austria A199387 ⤷  Get Started Free
Australia 597403 ⤷  Get Started Free
Australia 7661787 ⤷  Get Started Free
Belgium 1000235 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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