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Last Updated: December 22, 2024

Details for Patent: 8,892,190


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Summary for Patent: 8,892,190
Title:Method and apparatus for performing intra-operative angiography
Abstract: Method for assessing the patency of a patient's blood vessel, advantageously during or after treatment of that vessel by an invasive procedure, comprising administering a fluorescent dye to the patient; obtaining at least one angiographic image of the vessel portion; and evaluating the at least one angiographic image to assess the patency of the vessel portion. Other related methods are contemplated, including methods for assessing perfusion in selected body tissue, methods for evaluating the potential of vessels for use in creation of AV fistulas, methods for determining the diameter of a vessel, and methods for locating a vessel located below the surface of a tissue.
Inventor(s): Docherty; John C. (Winnipeg, CA), Hewco; Mark (Winnipeg, CA), Mangat; Gurpreet (Markham, CA), Flower; Robert W. (Hunt Valley, MD), Chari; Seshadri M. (Toronto, CA)
Assignee: National Research Council of Canada (Ontario, CA)
Application Number:13/419,368
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,892,190
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Understanding the Scope and Claims of United States Patent 8,892,190

To delve into the specifics of the United States Patent 8,892,190, it is crucial to analyze several key aspects, including the patent's scope, claims, and the broader patent landscape. Here’s a detailed breakdown of these elements.

Patent Scope and Claims

Patentable Subject Matter

For a patent to be valid, it must fall within one of the four categories of patentable subject matter as defined by 35 U.S.C. Section 101: processes, machines, articles of manufacture, and compositions of matter. The invention described in U.S. Patent 8,892,190 must fit into one of these categories to be considered patentable[1].

Novelty Requirement

The novelty requirement, as outlined in 35 U.S.C. Section 102, mandates that the invention must be new and not previously known or disclosed to the public before the patent application was filed. This includes ensuring that the invention was not described in a printed publication or a published patent application before the filing date[1].

Usefulness Requirement

The invention must also be useful, meaning it must have a practical application. This requirement is generally easy to meet for technological inventions but can be more stringent for pharmaceutical or chemical compounds, where specific utility must be demonstrated[1].

Non-Obviousness Requirement

The non-obviousness requirement, under 35 U.S.C. Section 103, ensures that the invention is a significant improvement over prior art. The patent examiner will compare the invention to existing patents and determine if the differences would have been obvious to a person with ordinary skill in the relevant field[1].

Claims Analysis

Independent and Dependent Claims

Patent claims are the legal definitions of the invention and are crucial for determining the scope of the patent. Independent claims define the invention broadly, while dependent claims narrow down the scope by adding specific features. The length and count of independent claims can influence the patent's scope and the likelihood of grant[3].

Claim Construction

The construction of claims is vital for understanding what is protected by the patent. Claims must be clear and definite to avoid issues of indefiniteness under 35 U.S.C. Section 112. The Federal Circuit has emphasized the importance of clear claim language in various cases, such as the DDR Holdings case, where the clarity of claims was a key factor in determining validity and infringement[5].

Patent Landscape

Prior Art and Patent Search

To understand the patent landscape surrounding U.S. Patent 8,892,190, it is essential to conduct a thorough prior art search. This involves reviewing existing patents, published patent applications, and other relevant documents to ensure the invention is novel and non-obvious. Tools like the USPTO's Public Search Facility and the Global Dossier service can be invaluable in this process[4].

Patent Family and Global Dossier

The Global Dossier service provides access to the file histories of related applications from participating IP offices, allowing users to see the patent family for a specific application. This can help in understanding how the patent fits into the broader global patent landscape[4].

Infringement and Litigation

Infringement Claims

To determine if a patent is being infringed, one must compare the claims of the patent to the allegedly infringing product or process. Cases like DDR Holdings illustrate the complexities involved in infringement litigation, where the validity of claims and the evidence of infringement are meticulously examined[5].

False Patent Marking

The issue of false patent marking, where a product is marked as patented when it is not, can also impact the patent landscape. Recent decisions, such as the Federal Circuit's ruling in Crocs, Inc. v. Effervescent, Inc., have revived private actors' rights to bring claims under the Lanham Act for false advertising related to patent marking[2].

Patent Maintenance and Enforcement

Patent Maintenance Payments

The maintenance of a patent involves periodic payments to keep the patent in force. Research has shown that narrower claims at publication are associated with a higher probability of grant and shorter examination processes, which can influence the overall cost and efficiency of maintaining a patent[3].

Office Actions and Evidentiary Rulings

During the patent examination process, office actions and evidentiary rulings can significantly impact the patent's validity and scope. Understanding these interactions is crucial for navigating the patent landscape effectively[5].

Industry Impact and Innovation

Patent Quality and Innovation

The quality of patents, including their scope and clarity, can influence innovation within an industry. Broader or overly broad patents can lead to increased licensing and litigation costs, potentially diminishing incentives for innovation. Metrics such as independent claim length and count can help in assessing patent quality[3].

Consumer Misleading and False Advertising

Claims of patent protection can also impact consumer perceptions. False claims of patent protection can be considered false advertising under the Lanham Act, as seen in the Crocs, Inc. v. Effervescent, Inc. case. This highlights the importance of accurate and truthful advertising in the patent landscape[2].

Key Takeaways

  • Patent Scope: The patent must fit into one of the four categories of patentable subject matter and meet the requirements of novelty, usefulness, and non-obviousness.
  • Claims Analysis: Clear and definite claims are essential for determining the scope of the patent and avoiding issues of indefiniteness.
  • Patent Landscape: Understanding prior art, patent families, and global dossier services is crucial for navigating the patent landscape.
  • Infringement and Litigation: Thorough comparison of claims with allegedly infringing products and processes is necessary for determining infringement.
  • Patent Maintenance: Narrower claims can lead to more efficient and cost-effective patent maintenance.
  • Industry Impact: Patent quality and accurate advertising are vital for fostering innovation and avoiding legal issues.

Frequently Asked Questions (FAQs)

What are the main requirements for a patent to be valid in the United States?

A patent must meet the requirements of novelty, usefulness, and non-obviousness, and it must fall within one of the four categories of patentable subject matter: processes, machines, articles of manufacture, and compositions of matter[1].

How do independent and dependent claims differ in a patent?

Independent claims define the invention broadly, while dependent claims narrow down the scope by adding specific features. The length and count of independent claims can influence the patent's scope and the likelihood of grant[3].

What is the significance of the Global Dossier service in patent searches?

The Global Dossier service provides access to the file histories of related applications from participating IP offices, allowing users to see the patent family for a specific application and understand the broader global patent landscape[4].

Can false patent marking lead to legal action?

Yes, false patent marking can lead to legal action under the Lanham Act for false advertising. Recent decisions have revived private actors' rights to bring such claims[2].

How does the clarity of patent claims impact patent validity and infringement?

Clear and definite claims are essential for avoiding issues of indefiniteness and for determining the scope of the patent. This clarity is crucial in litigation to establish validity and infringement[5].

Sources Cited

  1. BitLaw: Patent Requirements - BitLaw
  2. Spencer Fane: The Federal Circuit Breathes New Life into False Patent Marking Claims via Section 43(a) of the Lanham Act
  3. SSRN: Patent Claims and Patent Scope
  4. USPTO: Search for patents - USPTO
  5. United States Court of Appeals for the Federal Circuit: DDR Holdings - United States Court of Appeals for the Federal Circuit

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Drugs Protected by US Patent 8,892,190

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

International Family Members for US Patent 8,892,190

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 375749 ⤷  Subscribe
Austria 506005 ⤷  Subscribe
Australia 6767500 ⤷  Subscribe
Australia 782257 ⤷  Subscribe
Brazil 0014289 ⤷  Subscribe
Canada 2339214 ⤷  Subscribe
China 101264014 ⤷  Subscribe
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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