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Last Updated: December 22, 2024

Details for Patent: 8,518,437


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Which drugs does patent 8,518,437 protect, and when does it expire?

Patent 8,518,437 protects VYXEOS and is included in one NDA.

This patent has sixteen patent family members in nine countries.

Summary for Patent: 8,518,437
Title:Lipid carrier compositions with enhanced blood stability
Abstract: Liposomes that contain at least 10 mol % of a negatively charged lipid coupled to a non-zwitterionic moiety are stable in the blood. Liposomes containing at least 1 mol % of such lipids may be frozen safely.
Inventor(s): Tardi; Paul (Surrey, CA), Webb; Murray (North Vancouver, CA), Mayer; Lawrence D. (North Vancouver, CA), Ickenstein; Ludger M. (Vancouver, CA)
Assignee: Celator Pharmaceuticals, Inc. (Princeton, NJ)
Application Number:10/294,474
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 8,518,437: A Detailed Examination

Introduction

When delving into the world of patents, understanding the scope and claims of a particular patent is crucial for both inventors and competitors. This article will provide a detailed analysis of the scope and claims of United States Patent 8,518,437, focusing on its key aspects, implications, and the broader patent landscape.

Background on Patent 8,518,437

To begin, it is essential to identify the subject matter of the patent. However, since the specific details of Patent 8,518,437 are not provided in the sources, we will use general principles and examples to illustrate how to analyze a patent's scope and claims.

Understanding Patent Scope

Definition of Patent Scope

Patent scope refers to the breadth and depth of protection granted by a patent. It is determined by the claims section of the patent, which outlines what the inventor considers to be their invention[3].

Metrics for Measuring Patent Scope

Researchers often use metrics such as independent claim length and independent claim count to measure patent scope. These metrics can indicate the complexity and breadth of the patent claims. For instance, narrower claims at publication are associated with a higher probability of grant and a shorter examination process[3].

Analyzing Patent Claims

Types of Claims

Patent claims can be categorized into independent and dependent claims. Independent claims stand alone and define the invention, while dependent claims refer back to and further limit an independent claim.

Claim Language and Clarity

The language used in patent claims is critical. Clear and specific language helps in defining the scope of the invention, while vague or overly broad language can lead to disputes and litigation. The Federal Trade Commission (FTC) has highlighted concerns about software and Internet patents having unduly broad and unclear claims, which can impede innovation[3].

The Claims Section of Patent 8,518,437

Independent Claims

Independent claims in a patent like 8,518,437 would typically outline the core aspects of the invention. These claims should be broad enough to cover the essential features of the invention but not so broad that they become invalid or unenforceable.

Dependent Claims

Dependent claims would further specify and limit the independent claims, adding more detail to the invention. These claims help in narrowing down the scope and ensuring that the patent does not overly broaden its coverage.

Patent Landscape and Implications

Patent Quality and Examination Process

The quality of patent claims can significantly impact the examination process. Patents with narrower and clearer claims tend to have a shorter examination process and a higher probability of grant. This is because such claims are easier to evaluate and less likely to be challenged[3].

Litigation and Licensing

The scope and clarity of patent claims also affect litigation and licensing. Overly broad or unclear claims can lead to increased litigation costs and licensing complexities, which can diminish incentives for innovation[3].

Industry Examples and Analogies

Pharmaceutical Patents

In the pharmaceutical industry, patents like those for drugs such as cytarabine (used to treat certain types of leukemia) have specific claims that define the drug's composition, method of use, and other critical aspects. These claims must be precise to avoid infringement and ensure the drug's efficacy and safety[1].

Biotechnology Patents

Biotechnology patents, such as those involving liposome compositions (e.g., Celator Pharmaceuticals' proprietary liposome compositions), require detailed claims to protect the unique aspects of the invention. These claims must balance breadth with specificity to maintain their validity and enforceability[5].

Impact on Innovation

Encouraging Innovation

Clear and well-defined patent claims can encourage innovation by providing a clear roadmap of what is protected and what is open for further development. This clarity helps inventors and companies to navigate the intellectual property landscape more effectively.

Barriers to Innovation

On the other hand, overly broad or unclear claims can create barriers to innovation. They can lead to litigation, increased licensing costs, and a general uncertainty that discourages further research and development in the field[3].

Regulatory and Legal Considerations

Patent Office Guidelines

The U.S. Patent and Trademark Office (USPTO) has guidelines and procedures in place to ensure that patent claims are clear, specific, and not overly broad. These guidelines help in maintaining the quality of patents and ensuring that they serve their intended purpose of promoting innovation[3].

Litigation and Appeals

In cases where patent claims are disputed, litigation and appeals processes are available. These processes help in resolving disputes and ensuring that patent claims are valid and enforceable.

Key Takeaways

  • Patent Scope: Defined by the claims section, it determines the breadth and depth of protection.
  • Claim Language: Clear and specific language is crucial for defining the scope of the invention.
  • Independent and Dependent Claims: Independent claims define the core invention, while dependent claims further specify and limit them.
  • Patent Quality: Narrower and clearer claims are associated with a higher probability of grant and shorter examination process.
  • Industry Impact: Clear claims encourage innovation, while overly broad or unclear claims can create barriers.

FAQs

What is the significance of independent claims in a patent?

Independent claims define the core aspects of the invention and stand alone, providing the broadest protection for the inventor.

How do dependent claims differ from independent claims?

Dependent claims refer back to and further limit an independent claim, adding more detail and specificity to the invention.

Why is claim clarity important in patents?

Claim clarity is essential because it helps in defining the scope of the invention clearly, avoiding disputes and litigation, and ensuring that the patent is valid and enforceable.

How does the USPTO ensure patent quality?

The USPTO uses guidelines and procedures to ensure that patent claims are clear, specific, and not overly broad, maintaining the quality of patents and promoting innovation.

What are the implications of overly broad patent claims?

Overly broad patent claims can lead to increased litigation costs, licensing complexities, and a general uncertainty that discourages further research and development in the field.

Sources

  1. DrugBank: Cytarabine: Uses, Interactions, Mechanism of Action.
  2. Clark County: NAVITUS MEDICARERX (PDP) JANUARY 1 - Evidence of Coverage.
  3. Hoover Institution: Patent Claims and Patent Scope.
  4. Vyxeos: Starting your treatment with VYXEOS.
  5. BioSpace: Celator Pharmaceuticals, Inc. Receives U.S. Patent on Proprietary Liposome Composition.

More… ↓

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Drugs Protected by US Patent 8,518,437

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Celator Pharms VYXEOS cytarabine; daunorubicin POWDER;INTRAVENOUS 209401-001 Aug 3, 2017 RX Yes Yes ⤷  Subscribe ⤷  Subscribe Y ⤷  Subscribe
>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 8,518,437

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 373466 ⤷  Subscribe
Australia 2002340669 ⤷  Subscribe
Australia 2002340670 ⤷  Subscribe
Canada 2467060 ⤷  Subscribe
Canada 2467064 ⤷  Subscribe
Germany 60222580 ⤷  Subscribe
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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