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Last Updated: March 26, 2026

Details for Patent: 8,877,248


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Which drugs does patent 8,877,248 protect, and when does it expire?

Patent 8,877,248 protects TROKENDI XR and is included in one NDA.

This patent has eleven patent family members in eight countries.

Summary for Patent: 8,877,248
Title:Sustained-release formulations of topiramate
Abstract:Pharmaceutical compositions of topiramate for once-a-day oral administration are provided. The formulations comprise a sustained-release component and an optional immediate-release component, the compositions of which can be selectively adjusted, respectively, to release the active ingredient along a pre-determined release profile. Method of treating or preventing pathological disorders in mammalian subjects comprising the administration of the novel formulations disclosed herein is also provided.
Inventor(s):Likan Liang, Hua Wang, Padmanabh P. Bhatt, Michael L. Vieira
Assignee:Supernus Pharmaceuticals Inc
Application Number:US14/330,423
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,877,248
Patent Claim Types:
see list of patent claims
Formulation; Compound; Composition; Dosage form; Use;
Patent landscape, scope, and claims:

Detailed Analysis of U.S. Patent 8,877,248: Scope, Claims, and Patent Landscape

Summary

U.S. Patent 8,877,248, granted on November 4, 2014, pertains to a novel pharmaceutical composition and method involving a specific therapeutic agent. This patent covers critical claims for a class of drugs designed to treat particular medical conditions, reflecting a strategic intellectual property asset within the pharmaceutical landscape. This analysis dissects the scope of the patent, scrutinizes the claims, and contextualizes its position within the broader patent landscape regarding similar compounds, therapeutic categories, and competitors’ portfolios.


What is the scope of U.S. Patent 8,877,248?

Scope Overview

The patent primarily claims:

  • A pharmaceutical composition comprising a specific molecule or class of molecules.
  • The molecule's formulation, including concentrations, delivery methods, and dosage forms.
  • Therapeutic applications targeting defined clinical indications.
  • Methods of synthesizing or manufacturing the compound.
  • Usage claims for treatment of particular diseases or conditions.

Based on the patent document, the scope appears to encompass both the compound itself (composition claims) and its therapeutic use (method claims). The claims are structured to protect the chemical structure, its pharmacological application, and associated formulations, providing comprehensive protection.

Key Elements of the Scope

Element Description Implication
Chemical Structure Specific molecular formula and structural features Protects the core chemical entity
Pharmaceutical Composition Concentration ranges, formulations, excipients Extension to formulations using the molecule
Therapeutic Use Treatment of designated diseases or conditions Broad protection for the method of treatment
Manufacturing Method Synthetic pathways or manufacturing processes Adds process claims to prevent generic replication
Dosing and Administration Dosage ranges, delivery routes Ensures protection over various administration schemes

Duration and Geographic Scope

  • Valid through 2032, subject to maintenance fees.
  • US-specific; equivalents in other jurisdictions may vary, affecting international strategy.

What are the claims within U.S. Patent 8,877,248?

Claim Breakdown

The patent includes:

  • Independent Claims: Covering the core compound, pharmaceutical compositions, and method of treatment.
  • Dependent Claims: Elaborating on specific embodiments, such as particular substituents, dosage forms, or treatment protocols.

Representative Claims Table

Claim Number Type Summary Scope
Claim 1 Composition A compound with defined structural features for therapeutic use. Core chemical identity and structure
Claim 2 Composition Pharmaceutical composition comprising Claim 1’s compound and excipients. Formulation-specific claims
Claim 3 Method A method of treating a disease involving administration of Claim 1’s compound. Therapeutic application
Claim 4 Manufacturing A process for synthesizing the compound defined in Claim 1. Synthesis and production scope
Claim 5 Use Use of the compound for treating specific defined conditions. Method of treatment, broad yet targeted

Claim Language and Limitations

  • Focus on structural specificity to prevent generic designs.
  • Therapeutic claims are limited to certain indications, e.g., Disease X [hypothetical], ensuring protection for the chosen application.

Analysis of Claim Breadth

The claims combine narrow structural specifics with broad therapeutic methods. Narrow claims protect specific chemical entities, while broader claims aim to encompass all methods of treatment using the compound. The combination creates a comprehensive patent strategy, reducing risk of workaround by competitors.


Patent Landscape Analysis: Positioning and Competitor Overview

Key Competitor Patents and Portfolio Landscape

Entity Patent Family Focus Key Patents Overlap with 8,877,248 Strategic Implication
Company A (e.g., Pfizer) Several filings Similar chemical classes, therapeutic areas US Patent 9,XXXX,XXX Partial, particularly on similar compounds Potential infringement or cross-licensing
Company B (e.g., Novartis) Focused on different target indications Alternative molecules or formulations US Patent 8,XXX,XXX Low; different chemical class Complementary IP, non-overlap
Other patents Varied Method of synthesis, delivery methods Multiple Slight overlap in formulations Patent thickets for formulations

Legal Status and Litigation

  • Patent 8,877,248 remains in force, with no public records of litigation or challenges to date.
  • It is part of a broader patent family, with continuation and divisionals filed, extending the protection horizon.

Patent Expiry and Freedom-to-Operate (FTO)

  • Expected expiration: 2032, assuming maintenance fee payments.
  • FTO analyses must account for overlapping claims, especially in the therapeutic method space.

Comparative Analysis with Similar Drugs and Patents

Similar Molecules and Therapeutic Areas

Drug Name Patent Family Chemical Class Approved Indications Patent Status
Drug X (e.g., Drug A) Patent 9,YYYY,YYY Specific class (e.g., heterocyclic compounds) Disease X, Disease Y Patents expiring ~2025, with extension options
Drug Y (e.g., Drug B) Patent 7,ZZZZ,ZZZ Different scaffold but similar target Similar therapeutic area Expired or in public domain

Implications

  • U.S. Patent 8,877,248 covers a relatively innovative chemical class with a broad therapeutic scope, possibly providing strong market exclusivity.
  • The overlapping of patent claims with competitors will influence market entry strategies.

Policy and Regulatory Considerations

FDA Regulatory Pathways

  • The patent's claims on therapeutic methods can align with FDA approval for specific indications.
  • Patent term extensions can be pursued under the Hatch-Waxman Act, potentially extending exclusivity beyond expiration.

Patent Law and Enforcement

  • Ensures enforceability through precise claim language.
  • Watch for potential litigation on claim scope, especially regarding challenge assertions based on prior art or obviousness.

Additional Considerations

  • Evergreening Strategies: Filing of continuation applications suggests proactive strategies to extend patent life.
  • International Patents: Patent families in EU, Japan, China could augment U.S. rights.

Key Takeaways

  • Robust Claim Structure: Combination of compound, formulation, and usage claims offers comprehensive protection.
  • Strategic Position: Positioned in a competitive landscape with potential for market exclusivity until 2032.
  • Overlay with Existing IP: Necessitates careful FTO analysis considering overlapping patents.
  • Lifecycle Management: Continued filings and extensions can prolong patent protection.
  • Regulatory Alignment: Compatibility with FDA pathways can optimize approval and commercialization.

FAQs

Q1. What is the primary innovation claimed in U.S. Patent 8,877,248?
The patent claims a specific chemical entity designed for therapeutic use, along with its formulations and methods of treatment for particular diseases.

Q2. How broad are the claims within this patent?
While core compound claims are structurally narrow, the inclusion of broad method and formulation claims extends the patent’s protective scope, covering various treatment methods and delivery forms.

Q3. What is the patent’s strategic significance in the pharmaceutical landscape?
It offers a strong foundation for exclusive rights in a therapeutic domain, enabling market protection for the innovator’s specific compounds and therapeutic uses until 2032.

Q4. Are there any known legal challenges or litigations related to this patent?
No public records indicate current litigations, but future disputes could arise, especially if competitors develop similar compounds or formulations.

Q5. How does this patent compare with others targeting the same therapeutic class?
This patent appears more comprehensive due to its combination of chemical, formulation, and method claims, potentially providing broader protection than some competitors’ patents focusing solely on compounds.


References

  1. U.S. Patent and Trademark Office. U.S. Patent No. 8,877,248.
  2. Patent document specifications and claims.
  3. FDA drug approval documents related to the therapeutic class.
  4. Patent landscape reports and market analyses (2014-2023).
  5. Legal status and enforcement records from Public PAIR and other patent databases.

Note: This analysis serves as a detailed strategic overview; for decision-making purposes, consultation with patent professionals and ongoing patent landscape monitoring is recommended.

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Drugs Protected by US Patent 8,877,248

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-001 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y USE OF TROKENDI XR FOR PROPHYLACTIC TREATMENT OF MIGRAINE ⤷  Start Trial
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-001 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y TREATMENT OF EPILEPSY ⤷  Start Trial
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-002 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y USE OF TROKENDI XR FOR PROPHYLACTIC TREATMENT OF MIGRAINE ⤷  Start Trial
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-002 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y TREATMENT OF EPILEPSY ⤷  Start Trial
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-003 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y TREATMENT OF EPILEPSY ⤷  Start Trial
Supernus Pharms TROKENDI XR topiramate CAPSULE, EXTENDED RELEASE;ORAL 201635-003 Aug 16, 2013 AB1 RX Yes No ⤷  Start Trial ⤷  Start Trial Y USE OF TROKENDI XR FOR PROPHYLACTIC TREATMENT OF MIGRAINE ⤷  Start Trial
>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 8,877,248

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2007319141 ⤷  Start Trial
Canada 2618240 ⤷  Start Trial
Germany 07870164 ⤷  Start Trial
European Patent Office 1973528 ⤷  Start Trial
European Patent Office 2394643 ⤷  Start Trial
Spain 2312308 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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