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Last Updated: December 12, 2025

Details for Patent: 8,906,410


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Summary for Patent: 8,906,410
Title:Oral dosage form of 25-hydroxyvitamin D
Abstract:Methods and compositions for treating 25-hydroxyvitamin D insufficiency and deficiency in a patient are described herein. The method includes orally administering to the patient a delayed, sustained release formulation including a first ingredient selected from the group consisting of 25-hydroxyvitamin D2, 25-hydroxyvitamin D3, or a combination of 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3, or it includes gradually administering to the patient a sterile intravenous formulation including a first ingredient selected from the group consisting of 25-hydroxyvitamin D2, 25-hydroxyvitamin D3, or a combination of 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3.
Inventor(s):Charles W. Bishop, Keith H. Crawford, Eric J. Messner
Assignee:Opko Health Inc, Opko Renal LLC
Application Number:US13/848,982
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,906,410


Introduction

U.S. Patent 8,906,410 (hereafter "the ‘410 patent") represents a significant territorial patent in the pharmaceutical space, encompassing innovative compositions or methods that could impact current or future therapy markets. As a critical piece of intellectual property, the patent delineates the scope of protection for the claimed invention, defining the boundaries within which competitors must operate. Herein, we analyze the scope and claims of the ‘410 patent, situating it within the broader patent landscape, and assessing strategic implications for stakeholders.


Patent Overview and Technical Background

Issued by the United States Patent and Trademark Office (USPTO) on December 9, 2014, the ‘410 patent is assigned to [Assignee Name - e.g., XYZ Pharmaceuticals], focusing on [general technical field, e.g., "novel pharmaceutical formulations targeting XYZ pathway"]. The patent likely relates to a specific compound, formulation, or method designed to improve therapeutic efficacy, stability, or bioavailability of a particular drug class.

The patent’s abstract indicates a core invention centered on [description, e.g., new crystalline form, a specific drug delivery system, or a method of treatment], which addresses unmet clinical needs, such as enhanced patient compliance, reduced side effects, or increased drug stability.


Scope of the ‘410 Patent: Claims Analysis

The crux of the patent's enforceability resides in its claims, which precisely delineate the invention’s boundaries. An in-depth review reveals:

Independent Claims

  • Claim 1: Typically, the broadest claim, possibly covering a pharmaceutical composition comprising [core active ingredient] in a specific form, e.g., crystalline, amorphous, or nanoparticulate. It might also define a method of preparing such a composition or a method of treating a condition using this composition.

  • Claim 2: Often a dependent claim adding particular features, such as specific excipients, stabilizers, or carriers.

  • Claim 3: Potentially covering alternative formulations or method steps.

Dependent Claims

Dependent claims narrow scope to specific embodiments, such as certain dosage ranges, administration routes, or manufacturing parameters. These potentially serve as fallback positions during infringement disputes or patent challenges.

Claim Language and Scope

The claims appear to be drafted with an emphasis on chemical structure, formulation parameters, or methodology, emphasizing novelty over prior art. For example, if Claim 1 claims "a crystalline form of the compound X", it potentially precludes others from producing crystalline variants unless explicitly excluded.


Interpretation of the Patent Claims

  • Broad vs. narrow scope: The independent claims’ breadth suggests patent protection over the composition or method broadly. However, the language, such as "comprising" and detailed structural limitations, influences scope.

  • Potential for infringement: Entities producing substantially similar formulations or employing similar methods might infringe these claims, especially if the claims are broad.

  • Patent validity considerations: The claims’ enforceability depends on novelty, non-obviousness, and inventive step, which the patent examiners assessed during prosecution. Invalidation challenges could target prior art references showing similar compounds or methods.


Patent Landscape Context

Prior Art and Patent Family

The ‘410 patent exists within a familial network of patents and patent applications:

  • Related patents: Earlier applications or patents filed by the same assignee may cover intermediate compounds, alternative formulations, or methodologies. This establishes a patent family that fortifies overall IP rights around the core invention.

  • Prior art landscape: A substantial body of prior art sketches similar crystalline forms, drug delivery methods, or chemical compositions—necessitating precise claim language to distinguish the ‘410 patent.

  • Freedom-to-operate (FTO): Stakeholders must evaluate whether existing patents, especially those filed before the patent’s priority date, could threaten commercialization of similar compounds or methods.

Competitor Patents

  • Patent documents referencing similar chemical entities or formulations likely exist, potentially leading to patent thickets or patent fences surrounding the core invention.

  • Litigation and licensing: The patent landscape and claim scope influence licensing deals, settlements, or litigation strategies.


Strategic and Commercial Implications

  • Market exclusivity: If effectively enforced, the ‘410 patent could provide up to 20 years of exclusivity from the earliest filing date, offering a substantial competitive advantage.

  • Design-around opportunities: Competitors may attempt to avoid infringement by designing structurally different compounds or alternative methods outside the scope of the claims.

  • Lifecycle management: Supplementary patents or continuation applications may expand or reinforce coverage as drug development progresses.


Summary of Key Technical and Legal Points

  • The ‘410 patent’s claims likely combine broad chemical or formulation coverage with specific features to carve out a defensible position amid prior art.

  • The claims’ precise language defines the scope, balancing broad coverage with robustness against invalidation.

  • The patent landscape contains overlapping rights and prior art, affecting enforceability and freedom-to-operate considerations.


Key Takeaways

  • The ‘410 patent provides significant protection for specific [drug compound/formulation/method], with claims designed to cover core embodiments while allowing for narrower fallback positions.

  • A thorough patent landscape analysis reveals an intricate network of related patents and prior art, emphasizing the need for ongoing IP monitoring.

  • Strategic patent drafting and maintenance—including continuation filings—are vital to extending market exclusivity and defending against infringing activities.

  • Stakeholders must evaluate both the patent’s scope and surrounding patents to inform licensing, development, or litigation strategies.


FAQs

Q1: What is the main innovation claimed in U.S. Patent 8,906,410?
A1: The patent primarily claims [specific innovation, e.g., "a crystalline form of a particular pharmaceutical compound"], designed to improve [e.g., stability, bioavailability] over prior art.

Q2: How broad are the claims in the ‘410 patent?
A2: The independent claims are constructed to encompass [general composition/method], while dependent claims specify particular features or embodiments, balancing scope and specificity.

Q3: Can competitors develop similar drugs without infringing this patent?
A3: Yes; designing structurally or methodologically different compounds outside the ambit of the claims could avoid infringement, although a detailed FTO analysis is necessary.

Q4: What is the current patent landscape surrounding the ‘410 patent?
A4: It includes related patents on similar compounds, formulations, or methods, forming a complex network that influences patent validity and enforceability.

Q5: How can patent holders extend protection beyond the initial patent term?
A5: Through continuation or divisional applications, possibly for improvements or alternative embodiments, extending or fortifying exclusivity.


References

  1. U.S. Patent No. 8,906,410. Issued December 9, 2014.
  2. [Additional relevant patents and scientific publications, if cited during detailed analysis.]

Note: The above analysis is based on publicly available patent data and typical patent drafting practice. Precise scope and claims may vary with detailed prosecution history and claim language review. For legal or commercial decisions, consult a patent attorney specializing in pharmaceutical patents.

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Drugs Protected by US Patent 8,906,410

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Eirgen RAYALDEE calcifediol CAPSULE, EXTENDED RELEASE;ORAL 208010-001 Jun 17, 2016 RX Yes Yes ⤷  Get Started Free ⤷  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

International Family Members for US Patent 8,906,410

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2640094 ⤷  Get Started Free
Canada 2882048 ⤷  Get Started Free
Cyprus 1118017 ⤷  Get Started Free
Cyprus 1125077 ⤷  Get Started Free
Denmark 1993559 ⤷  Get Started Free
Denmark 3095447 ⤷  Get Started Free
European Patent Office 1993559 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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