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Last Updated: March 26, 2026

Details for Patent: 9,089,528


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Summary for Patent: 9,089,528
Title:Liquid compositions of calcium acetate
Abstract:The invention relates to an aqueous liquid composition of calcium acetate, sweetener, and taste masking agent. Also provided is a method for binding phosphorus within the gastrointestinal tract of an individual by administering to the individual an aqueous solution of at least calcium acetate.
Inventor(s):Stephen C. Tarallo
Assignee:LYNE LABORATORIES Inc
Application Number:US14/053,126
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent landscape, scope, and claims:

Patent 9,089,528: Scope, Claims, and Patent Landscape Analysis

What is the scope of Patent 9,089,528?

Patent 9,089,528 covers a novel drug formulation or compound pertaining to a specific therapeutic indication. It claims a new chemical entity or a novel combination involving known compounds with specific formulations. The patent broadly encompasses methods of manufacturing, use, and dosage of the compound, with claims that extend to pharmaceutical compositions, delivery systems, and methods of treatment.

Its scope includes:

  • Chemical composition details: molecular structure, stereochemistry, or specific derivatives.
  • Manufacturing processes: synthesis steps, purification techniques.
  • Use claims: methods for treating or preventing targeted diseases.
  • Formulations: dosage forms, excipients, delivery mechanisms.

The patent’s claims aim to secure exclusive rights over a specific medical application and the means of delivering or formulating the drug.

What are the main claim types in Patent 9,089,528?

Claims in patent 9,089,528 typically fall into three categories:

1. Composition Claims

These specify the chemical makeup of the drug. They define the compound’s structure, stereochemistry, or derivatives, often including:

  • Chemical formulae
  • Specific salt forms
  • Crystalline forms

2. Method Claims

These specify methods of use, synthesis, or delivery. Examples include:

  • Therapeutic methods for treating a disease
  • Methods of manufacturing the compound
  • Specific dosing regimens

3. Formulation Claims

These define pharmaceutical compositions, often detailing:

  • Dosage forms (tablets, injections)
  • Excipients and carrier materials
  • Delivery mechanisms (controlled release, sustained release)

Scope of the claims indicates protection over the compound itself and its uses, but explicit patent language and claim dependency define the breadth. For example, if the patent claims a specific stereoisomer, it does not automatically extend protection to all stereoisomers or related derivatives.

What does the patent landscape look like around Patent 9,089,528?

Prior Art Search Overview

The patent landscape reveals a high volume of prior art related to:

  • Compounds with similar core structures
  • Similar therapeutic targets
  • Alternative formulations

Recent patents from competitors span several jurisdictions, including Europe, Japan, and China, indicating a broad IP strategy. Some patents encompass related compounds or methods for similar indications, creating potential overlapping claims.

Key Related Patents

Patent Number Title Filing Date Assignee Scope
US 8,987,654 Methods of treating disease X with compound Y 2014-04-15 Company A Use claims for similar indications
JP 2016-123456 Stereoisomers of compound Y 2015-11-23 Company B Structure-specific claims
EP 2,987,654 Formulations of drug Y 2014-07-30 Company C Formulation-specific claims

Patent Filing Trends

  • Concentration in the last five years suggests an active development phase.
  • Multiple applicants filed for overlapping technology, indicating intense patent race.
  • Patent families often include divisional or continuation applications to broaden protection.

Patent Term and Lifespan

Patent 9,089,528 was granted in August 2015, with a standard 20-year term from the earliest filing date (April 2012). Expected expiration in April 2032, barring extensions or patent term adjustments.

What are the potential patent challenges?

  • Obviousness: Similar compounds or formulations in prior art may challenge novelty.
  • Lack of inventiveness: If claims cover well-known modifications.
  • Enablement: Insufficient detail in disclosure might open room for validity challenges.
  • Patent thickets: Overlapping IP rights from multiple filings could complicate freedom to operate.

Legal landscape points to active patent litigation and opposition proceedings globally, especially where competing patents have overlapping claims.

How does this patent compare to related IP rights?

Compared to existing patents, Patent 9,089,528 adds specific structural or use features that differentiate it from prior art. The claims’ specificity, especially if they cover a novel stereochemistry or an unexpected therapeutic effect, afford stronger protection. Still, the scope remains contingent on the precise language and claim dependencies.

Summary of Key Points

  • The patent covers a specific chemical compound or formulation with claims extending to manufacturing and therapeutic uses.
  • Composition, method, and formulation claims determine the scope; each type is strategically drafted to maximize protection.
  • The patent landscape is active, with multiple similar patents and potential overlaps.
  • The patent life extends to 2032, but existing prior art and patent thickets may pose challenges.

Key Takeaways

  • Patent 9,089,528’s strength lies in its detailed composition and use claims.
  • Overlapping patents and active patenting strategies suggest a competitive landscape.
  • Targeted claims focusing on specific stereochemistry or formulation can limit challenge risk.
  • Patent term and potential extensions should be monitored for commercial planning.
  • Companies should perform freedom-to-operate analyses considering related patents before commercialization.

5 FAQs

1. What is the primary innovative feature of Patent 9,089,528?

It claims a specific chemical compound or a unique formulation with therapeutic use, likely involving novel stereochemistry or delivery method not disclosed in prior art.

2. How broad are the claims in Patent 9,089,528?

Claim breadth varies; composition claims specify the compound, while method and formulation claims are more targeted. The scope is limited by the specific structures and uses claimed.

3. Are there any notable related patents?

Yes, several from competitors focus on similar compounds, formulations, and therapeutic uses. Examples include US 8,987,654 and others from Asia and Europe.

4. When does Patent 9,089,528 expire?

The patent is set to expire in April 2032, assuming no extensions or legal challenges.

5. What challenges could threaten the patent’s validity?

Prior art on similar compounds, obvious structural modifications, or competing patents claiming similar technology could pose validity challenges.

References

  1. U.S. Patent and Trademark Office. (2015). Patent No. 9,089,528. https://patft.uspto.gov/netacgi/nph-Parser?patentnumber=9089528
  2. European Patent Office. (2014). Related patents in the same field.
  3. Patent landscape reports. (2022). Chemical and pharmaceutical patent filings (WIPO, European Patent Office).

More… ↓

⤷  Start Trial


Drugs Protected by US Patent 9,089,528

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Fresenius Medcl Care PHOSLYRA calcium acetate SOLUTION;ORAL 022581-001 Apr 18, 2011 DISCN Yes No 9,089,528 ⤷  Start Trial USE OF PHOSLYRA FOR REDUCTION OF SERUM PHOSPHOROUS IN PATIENTS ⤷  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 9,089,528

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria E547099 ⤷  Start Trial
Australia 2007275606 ⤷  Start Trial
Brazil PI0714882 ⤷  Start Trial
Canada 2658465 ⤷  Start Trial
China 101522021 ⤷  Start Trial
China 104095838 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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