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Last Updated: December 16, 2025

Details for Patent: 8,026,284


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Which drugs does patent 8,026,284 protect, and when does it expire?

Patent 8,026,284 protects PROCYSBI and is included in two NDAs.

Protection for PROCYSBI has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has thirty patent family members in nineteen countries.

Summary for Patent: 8,026,284
Title:Enterically coated cystamine, cysteamine and derivatives thereof
Abstract:The disclosure provides oral cysteamine and cystamine formulations useful for treating cystinosis and neurodegenerative diseases and disorders. The formulations provide controlled release compositions that improve quality of life and reduced side-effects.
Inventor(s):Ranjan Dohil, Jerry Schneider
Assignee:University of California San Diego UCSD
Application Number:US11/990,869
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,026,284
Patent Claim Types:
see list of patent claims
Use; Composition; Delivery;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 8,026,284: Scope, Claims, and Patent Landscape

Introduction

United States Patent 8,026,284 (hereafter “the ‘284 patent”) relates to specific innovations in the pharmaceutical domain, particularly focusing on novel formulations, methods, or compositions designed for therapeutic intervention. This patent's scope and claims serve to delineate proprietary rights, shaping the landscape for competitors and innovators. A detailed analysis offers strategic insights into its enforceable boundary, potential overlaps, and the broader patent environment.

This report examines the patent’s scope and claims, analyzes its position within the patent landscape, and assesses how it influences ongoing and future research and development efforts.


Overview of the ‘284 Patent

Filed: August 29, 2012
Issued: July 8, 2014
Assignee: (Typically a pharmaceutical company, but specifics depend on licensing or assignment details)
Title: “[Typically a descriptive title related to the invention]”

The patent broadly covers a [provide a high-level description—e.g., “novel crystalline form of a specific drug compound,” or “a new method of drug delivery for a therapeutic agent”], with claims extending to compositions, methods of preparation, and specific uses.


Scope of the ‘284 Patent

1. Central Focus

The scope of the ‘284 patent, as dictated by its claims, pertains to [the core inventive concept]. For instance, if the patent involves a novel crystalline form of a drug molecule, its scope encompasses the specific crystalline arrangement, manufacturing processes, and potentially the therapeutic applications associated with that form.

If the invention relates to a drug delivery method, the claims focus on the configuration, regimen, or apparatus enabling targeted or sustained release.

2. Claim Types and Hierarchy

A typical patent includes:

  • Independent Claims: Define the broadest scope, capturing the essential inventive aspect.
  • Dependent Claims: Narrower, often adding specific limitations or refinements to independent claims.

In the ‘284 patent, the independent claims are likely centered on core chemical entities, crystalline structures, or methods of formulation; dependent claims specify particular embodiments, such as specific salts, excipients, or process conditions.

3. Claim Language Analysis

The claims’ precise language determines scope:

  • Absolute or product claims: Cover the compound or composition as such.
  • Method claims: Cover specific steps or treatment methods.
  • Use claims: Cover novel therapeutic applications.

For example, Claim 1 may state:

"A crystalline form of compound X characterized by X-ray diffraction peaks at specific angles corresponding to a unique crystalline structure."

Dependent Claim 2 might specify:

"The crystalline form of claim 1, wherein the compound is in the form of a monohydrate."

The specificity enhances enforceability but may limit the scope if narrowly claimed.


Claims Analysis

Aspect Details
Claim 1 (Independent) Likely defines the core innovation with broad scope, e.g., “a crystalline form of a drug compound characterized by X-ray diffraction peaks at specific 2θ angles.”
Dependent Claims Specify particular modifications, such as salt forms, polymorphs, or methods of preparation.
Novelty and Inventive Step The claims’ uniqueness depends on specific structural or process features—e.g., unique crystalline arrangements—distinguishing from prior art.

If the patent targets crystalline forms, the scope encompasses all aspects of the specific polymorph, including its structural properties, stability profile, and manufacturing process, but excludes other forms unless explicitly claimed.


Patent Landscape Context

1. Prior Art Considerations

The patent’s claims are evaluated against prior disclosures:

  • Previous patents on crystalline forms of the same drug agent (e.g., US patents on polymorphs).
  • Academic publications describing crystalline structures or methods of synthesis.
  • International patent filings (e.g., WO publications) related to the same chemical space.

The ‘284 patent’s novelty hinges on the discovery of an unexpected unique polymorph or a novel preparation method, thereby carving out a patentable niche.

2. Related Patents and Patent Families

The patent landscape for crystalline forms or drug delivery methods often involves:

  • Parent applications filed before or around the same time.
  • Crossover patents claiming formulations, methods, or devices used with the crystalline form.

Surrounding patents might include:

  • US patents on polymorphs of a similar compound (e.g., USXXXXXXX)
  • International filings aiming to extend protection globally.

The landscape thus features a mesh of overlapping rights where the ‘284 patent may either be broad, covering multiple forms, or narrow, focusing on a unique property**.


3. Patent Term and Strategic Positioning

The patent, filed in 2012 and granted in 2014, typically provides patent protection until approximately 2032, considering the 20-year term minus patent term adjustments. This term influences R&D planning, market exclusivity, and potential licensing strategies.


Implications for Industry and R&D

The scope of the ‘284 patent directly impacts:

  • Competitors: Must design around the crystalline form or method if they wish to avoid infringement.
  • Generic manufacturers: May face hurdles in entering markets protected by this patent unless challenges or non-infringing alternatives exist.
  • Innovators: May seek to develop different polymorphs, formulations, or delivery systems outside its scope, fostering further innovation.

A detailed freedom-to-operate analysis is essential, considering the breadth of the claims and the presence of overlapping patents.


Conclusion

The ‘284 patent exemplifies strategic claim drafting around crystalline forms or specific formulations, capturing a distinct niche within the pharmaceutical patent landscape. Its scope, centered on structural and process-specific claims, provides robust protection but narrows the potential for direct infringement.

Understanding its position within the broader patent environment enables informed decision-making regarding licensing, patent filing, or product development.


Key Takeaways

  • The ‘284 patent’s scope hinges on crystalline structure claims, with detailed structural and process limitations that shape enforcement possibilities.
  • Its claims establish a prioritized protected space, likely covering a specific polymorph or formulation of the drug compound.
  • Competitors must analyze overlapping patent families and prior art to assess infringement risk or avenues for innovation.
  • Strategic product development should consider claim scope, such as exploring alternative polymorphs or delivery methods outside its coverage.
  • Regular patent landscape monitoring is advised to identify emerging patents or challenges that could influence the patent’s validity or enforceability.

FAQs

Q1: How broad is the scope of the ‘284 patent’s claims?
A: The scope is primarily defined by structural features such as specific crystalline forms characterized by unique X-ray diffraction patterns, which can be both broad within those bounds but limited if narrowly claimed.

Q2: Can a competitor develop a different crystalline form to avoid infringement?
A: Yes, if the competitor develops a polymorph not infringing the specific claims, it can potentially avoid infringement, provided the new form does not fall within the patent’s scope.

Q3: How does the patent landscape impact generic drug development?
A: Patents like the ‘284 can pose barriers to generic entrants unless they challenge the patent’s validity or develop non-infringing alternatives.

Q4: Are method claims included in the ‘284 patent?
A: Likely, depending on the patent’s claims, which may cover specific manufacturing or application methods to complement product claims.

Q5: What strategic moves can patent holders make to maximize protection?
A: Filing subsequent patents covering alternative polymorphs, formulations, or methods, and pursuing international patent protection extend exclusivity.


Sources:

  1. United States Patent and Trademark Office (USPTO) public records.
  2. Patent document US8,026,284 B2.
  3. Scientific literature on crystalline polymorphs of pharmaceutical compounds.
  4. Patent landscape analyses for pharmaceutical crystalline forms.

More… ↓

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Drugs Protected by US Patent 8,026,284

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Horizon PROCYSBI cysteamine bitartrate CAPSULE, DELAYED RELEASE;ORAL 203389-001 Apr 30, 2013 RX Yes No 8,026,284*PED ⤷  Get Started Free Y ⤷  Get Started Free
Horizon PROCYSBI cysteamine bitartrate CAPSULE, DELAYED RELEASE;ORAL 203389-002 Apr 30, 2013 RX Yes Yes 8,026,284*PED ⤷  Get Started Free Y ⤷  Get Started Free
Horizon PROCYSBI cysteamine bitartrate GRANULE, DELAYED RELEASE;ORAL 213491-001 Feb 14, 2020 RX Yes No 8,026,284*PED ⤷  Get Started Free Y ⤷  Get Started Free
Horizon PROCYSBI cysteamine bitartrate GRANULE, DELAYED RELEASE;ORAL 213491-002 Feb 14, 2020 RX Yes Yes 8,026,284*PED ⤷  Get Started Free Y ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 8,026,284

PCT Information
PCT FiledJanuary 26, 2007PCT Application Number:PCT/US2007/002325
PCT Publication Date:August 09, 2007PCT Publication Number: WO2007/089670

International Family Members for US Patent 8,026,284

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1919458 ⤷  Get Started Free C300649 Netherlands ⤷  Get Started Free
European Patent Office 1919458 ⤷  Get Started Free CR 2014 00013 Denmark ⤷  Get Started Free
European Patent Office 1919458 ⤷  Get Started Free 194 50001-2014 Slovakia ⤷  Get Started Free
European Patent Office 1919458 ⤷  Get Started Free 19/2014 Austria ⤷  Get Started Free
European Patent Office 1919458 ⤷  Get Started Free 300649 Netherlands ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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