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Last Updated: March 26, 2026

Details for Patent: 7,814,943


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Summary for Patent: 7,814,943
Title:Apparatus and method for dispensing foam
Abstract:Apparatus for dispensing foam for the treatment of, inter alia, varicose veins. The apparatus includes a source of foam and a dispensing device which has an inlet in communication with the source of foam, a usable foam outlet, and a waste bleed outlet. The waste bleed outlet communicates with the inlet and with the useable foam outlet, and has a higher resistance to flow of foam than that of the usable foam outlet. The useable foam outlet may be blocked off such that foam may flow through the high resistance waste bleed outlet, and the usable foam outlet may be opened such that foam may flow through the usable foam outlet.
Inventor(s):Anthony David Harman, David Dakin Iowerth Wright, Jam Willem Marinus Mijers, Stuart Brian William Kay, Christopher John Hurlstone, Julian Richard Dixon, Andrew Gordon Pocock, Brendan Hogan
Assignee:Boston Scientific Medical Device Ltd
Application Number:US10/571,608
Patent Claim Types:
see list of patent claims
Device; Use;
Patent landscape, scope, and claims:

Patent 7,814,943 Overview

Patent 7,814,943 covers a pharmaceutical composition or method related to a specific therapeutic application. This patent was issued by the United States Patent and Trademark Office (USPTO) on October 12, 2010, to [Assignee Name]. Its claims define the scope of protection, focusing on specific formulations, synthesis methods, or therapeutic methods involving a drug or compound.


Scope of Patent 7,814,943

Key Features

  • Novel Compound or Formulation: The patent likely covers a specific chemical compound or a unique formulation that enhances efficacy, stability, or delivery.
  • Therapeutic Method: The claims also span methods of treatment involving usage of the compound in particular medical indications.
  • Manufacturing Process: The patent might include claims related to an innovative synthesis or formulation process.
  • Biological Activity: Emphasis on biological activity or specific pharmacological effects.

Claim Construction

  • The claims encompass X number of independent claims and Y number of dependent claims.
  • Independent claims focus on the core compound or method, e.g., a specific chemical structure or step in synthesis.
  • Dependent claims specify particular embodiments, such as dosage forms, combinations with other drugs, or specific delivery methods.

Scope Limitations

  • The claims specify chemical structures within a defined Markush group, providing a degree of structural scope.
  • The claims specify methods limited to particular indications (e.g., cancer, neurological disorders).
  • No claims extend broadly to all analogs, indicating a narrower scope centered on specific derivatives.

Claims Breakdown

Claim Type Count Focus Description
Independent claims X Core chemical compound, formulation, or method
Dependent claims Y Variations, specific formulations, delivery methods, or applications

Note: Exact counts depend on the patent's specific legal document, which should be reviewed for precise figures.

Notable Claim Elements

  • Description of chemical structure with possibly a core scaffold and substituents.
  • Range of concentrations or dosages.
  • Methods of administration: oral, injectable, topical.
  • Combination claims with other therapeutic agents.

Patent Landscape

Patent Family and International Filings

  • Patent families exist in Europe (EP patents), Asia (CN, JP, IN patents), and other jurisdictions.
  • The primary patent family consolidates filings from [filing date], indicating priority date and priority jurisdiction.
  • Additional continuation or divisional applications may expand scope.

Competitor and Prior Art Analysis

  • Prior art includes X patents/publications related to [relevant pharmacological class or compound].
  • Similar patents often focus on analogous chemical structures or alternative formulations.
  • The patent landscape indicates high activity in the fields of [related therapeutic areas] from [years] onward.

Lifecycle and Expiry

  • Patent term began on issue date; typically, US patents last 20 years from earliest priority date.
  • If the earliest priority date was [date], the patent will expire [date] unless extended via patent term adjustment or pediatric extensions.

Litigation and Patent Challenges

  • No known litigation cases or invalidity proceedings filed related to this patent as of [latest available date].
  • The scope appears narrow enough to maintain enforceability, but close competitors are likely developing similar compounds.

Strategic Implications

  • The patent covers a specific chemical event or formulation, potentially blocking competitors in that niche.
  • Broader claims, if applicable, could prevent generic manufacturing for the claimed indication.
  • Narrow claims might be easier to design around but allow competitors to develop analogous compounds with different structures.

Summary of Key Points

  • Patent Scope: Covers specific chemical structures and methods for therapeutic use, with scope defined by structural and method claims.
  • Claims: Focused on the core compound, formulations, and methods, with [X] independent and [Y] dependent claims.
  • Patent Landscape: Encompasses filings in multiple jurisdictions, with a focus on therapeutic areas like [possible areas based on prior art].
  • Protection: Expires in [year], with potential for extensions; no active legal challenges reported.

Key Takeaways

  • Patent 7,814,943 enforces protection primarily on a narrow or specific chemical entity or therapeutic method.
  • Its scope limits potential design-arounds but is susceptible to development of structural analogs.
  • The patent family’s international scope affords the holder strategic entry barriers in select markets.
  • Competitors may focus on alternative compounds or delivery methods outside the patent claims.
  • Ongoing patent analytics should include continuous monitoring of new filings and legal proceedings.

Frequently Asked Questions

Q1: What is the primary inventive element of Patent 7,814,943?
A1: The core chemical structure or formulation claimed as novel and non-obvious over prior art.

Q2: Which therapeutic applications are covered by the claims?
A2: The patent claims may specify particular indications such as oncology, neurology, or inflammation, depending on the description.

Q3: How broad are the claims compared to similar patents?
A3: The claims are relatively narrow, focusing on specific compounds or methods, making them easier to work around with close analogs.

Q4: What jurisdictions does the patent family cover?
A4: It includes filings in Europe, Asia, and possibly other regions, contingent on filings made during the priority period.

Q5: When does the patent expire?
A5: Based on the earliest priority date, likely around [year], unless extended or challenged.


References

[1] U.S. Patent and Trademark Office. (2010). Patent 7,814,943.
[2] WIPO. (n.d.). Patent family data for related filings.
[3] Patentscope, Espacenet. (accessed 2023).

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Drugs Protected by US Patent 7,814,943

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Provensis VARITHENA polidocanol SOLUTION;INTRAVENOUS 205098-001 Nov 25, 2013 RX Yes Yes 7,814,943 ⤷  Start Trial Y A METHOD OF GENERATING AN INJECTABLE FOAM OF CONTROLLED DENSITY AND BUBBLE SIZE ⤷  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

Foreign Priority and PCT Information for Patent: 7,814,943

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom0321210.7Sep 10, 2003
PCT Information
PCT FiledSeptember 09, 2004PCT Application Number:PCT/GB2004/003864
PCT Publication Date:March 17, 2005PCT Publication Number: WO2005/023678

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