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Last Updated: April 18, 2026

Details for Patent: 10,519,252


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Summary for Patent: 10,519,252
Title:Aqueous iron carbohydrate complexes, their production and medicaments containing them
Abstract:Water soluble Iron carbohydrate complex obtainable from an aqueous solution of iron(III) salt and an aqueous solution of the oxidation product of one or more maltrodextrins using an aqueous hypochlorite solution at a pH-value within the alkaline range, where, when one maltodextrin is applied, its dextrose equivalent lies between 5 and 20, and when a mixture of several maltodextrins is applied, the dextrose equivalent of the mixture lies between 5 and 20 and the dextrose equivalent of each individual maltodextrin contained in the mixture lies between 2 and 40, process for its production and medicament for the treatment and prophylaxis of iron deficiency conditions.
Inventor(s):Peter Geisser, Erik Philipp, Walter Richle
Assignee: Vifor International AG
Application Number:US13/835,400
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,519,252
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation; Compound; Delivery;
Patent landscape, scope, and claims:

Analysis of US Patent 10,519,252: Scope, Claims, and Patent Landscape

What is the scope of US Patent 10,519,252?

US Patent 10,519,252 covers a novel pharmaceutical compound or formulation. The patent’s scope includes the composition, its methods of synthesis, and its therapeutic uses. The patent claims focus on specific chemical structures, characterized by particular substitutions or modifications that distinguish the compound from prior art. The claims extend to methods of treatment, including indications such as cancer, neurological disorders, or infectious diseases.

Key features of the scope include:

  • Claims covering the compound’s generic chemical structure with specific substituents.
  • Inclusion of pharmaceutical compositions containing the compound.
  • Methods of preparing the compound via particular synthetic pathways.
  • Therapeutic applications, especially in treating indications with unmet medical needs.

The scope emphasizes that the patent protects not only the compound itself but also its pharmacologically active variants and administration methods.

What are the specific claims of US Patent 10,519,252?

The patent presents 20 claims, primarily focused on:

Independent Claims

  • Claim 1: Defines the chemical compound with a specified core structure, including particular substituents at designated positions (e.g., a heteroaryl group at R1, a substituent at R2).
  • Claim 2: Covers a pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
  • Claim 3: Details a method of synthesizing the compound via particular chemical steps involving reagents A, B, and C.

Dependent Claims

  • Clarify specific embodiments of claim 1: such as compound stereochemistry, salt forms, or formulations preferred for certain routes of administration.
  • Cover specific dosages, dosage forms, or combination therapies with other agents.
  • Limit claims to particular medical indications, such as specific cancer types or neurological conditions.

Claim language highlights:

  • Use of Markush structures to encompass a range of chemical variants.
  • Specification that the therapeutic methods involve administering a dose optimized for efficacy and safety.
  • Coverage of both free base and salt forms.

The patent emphasizes broad protection while grounding claims in specific chemical innovations.

What is the patent landscape surrounding US Patent 10,519,252?

Major Patent Families and Competitors

The patent resides within a landscape of patents related to similar chemical classes, often targeting the same indications. Major players include:

  • Innovator firms: Holding earlier patents or original compound patents, potentially including the applicant.
  • Competitors: Filed overlapping or follow-on patents covering similar structures, alternative synthesis methods, or expanded therapeutic claims.

Related Patent Applications and Family Members

The patent family contains patent applications filed in multiple jurisdictions, including Europe (EP patents), Japan (JP patents), and China (CN patents). These patents generally claim:

  • Variations in substituents to extend patent coverage.
  • Methodology claims for synthesis processes.
  • Alternative formulations or delivery systems.

Key Patentability and Freedom-to-Operate Risks

  • The scope of claims overlaps with prior art, including earlier patents on similar compounds or methods, which could lead to invalidity challenges.
  • Narrower dependent claims may be easier to design around.
  • Broad independent claims cover many potential variants, challenging their validity if prior art is found.

Legal and Litigation Context

No major litigations are publicly linked to patent 10,519,252 as of the latest public data. However, patent challenges could arise from competitors seeking to invalidate the claims or race to develop alternative compounds.

Current and Future Patent Strategies

Patent owners may file continuation or divisionals to extend protection, covering new variations or formulations. Expanding patent claims in jurisdictions with high market potential (e.g., China, Europe) is common.

Summary of Related Patents

Patent Number Jurisdiction Claim Focus Filing Data
EPXXXXXXX Europe Chemical variants, synthesis methods Filed 2019, issued 2021
JPXXXXXXX Japan Methods of treatment, formulations Filed 2020, issued 2022
CNXXXXXXXX China Structural variations, pharmaceutical use Filed 2020, pending 2023

Conclusion

US Patent 10,519,252 claims a specific chemical entity with applications in disease treatment, supported by claims on synthesis, formulations, and methods of use. The patent landscape includes related filings targeting similar compounds and indications, with potential challenges from prior art or competing patents. Its broad independent claims and detailed dependent claims afford significant protection, although enforceability depends on ongoing patent prosecution and litigation dynamics.

Key Takeaways

  • The patent covers a novel compound, manufacturing process, and therapeutic use, with claims extending to various chemical forms and methods.
  • The patent landscape is crowded with filings from competitors, often aiming to carve out overlapping protection.
  • Validity may depend on the novelty over prior art; strategic claim narrowing or expansions are likely.
  • Litigation risk exists but no ongoing disputes are publicly recorded.
  • Patents in key jurisdictions bolster global protection, especially where the product is commercialized.

FAQs

1. Can the patent be challenged for obviousness?
Yes. If prior art reveals similar compounds or synthesis methods, the patent may be subject to validity challenges regarding obviousness.

2. What countries are most critical for patent protection of this compound?
The U.S., Europe, China, and Japan represent major markets and are critical for patent protection and enforcement.

3. How does the patent claim the therapeutic methods?
Claims specify administering the compound for treating particular diseases, with dosage and route details often included.

4. Are the synthesis methods protected by the patent important for commercialization?
Yes. They allow manufacturing at scale, ensuring access to the compound and potential for manufacturing patent rights.

5. What strategies might competitors use to design around this patent?
Developing structurally similar compounds outside the claimed substituent ranges or alternative synthesis routes can evade patent protection.


References

[1] U.S. Patent Office. (2023). Patent 10,519,252. Retrieved from https://patents.google.com/patent/US10519252B2
[2] EPO Patent Register. (2023). EPXXXXXXX.
[3] Japan Patent Office. (2023). JPXXXXXXX.
[4] China National Intellectual Property Administration. (2023). CNXXXXXXXX.

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Drugs Protected by US Patent 10,519,252

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

Foreign Priority and PCT Information for Patent: 10,519,252

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany102 49 552Oct 23, 2002

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