Details for Patent: 3,862,319

Summary for Patent: 3,862,319

Title:	BENZOTHIAZINE DIOXIDES AS ANTI-THROMOBOTIC AGENTS
Abstract:	Certain 3,4-dihydro-4-oxo and 3-oxo-2H-1,2-benzothiazine-3-carboxamide and 4-carboxamide 1,1-dioxide compounds effective in the treatment of thrombosis are disclosed.
Inventor(s):	Lombardino; Joseph G. (New London, CT), Wiseman; Edward A. (New London, CT)
Assignee:	Pfizer Inc. (New York, NY)
Application Number:	05/362,518
Patent Claim Types: see list of patent claims	Use; Dosage form;

Understanding the Scope and Claims of a U.S. Patent: A Detailed Analysis of United States Patent 3,862,319

Introduction

When analyzing a U.S. patent, it is crucial to understand the various components that define its scope and claims. This article will delve into the specifics of United States Patent 3,862,319, using it as a case study to explain the key elements of a patent document.

The Front Page of a U.S. Patent

The front page of a U.S. patent, such as Patent 3,862,319, contains essential bibliographic data identified by INID codes. These codes, defined under WIPO Standard ST.9, help in quickly locating specific information[1].

Document Number and Type

• The document number, prefixed with "US," indicates it is a U.S. patent. The code "B2" or similar indicates it has a previously published application.
• The document type is specified as "Patent."

Application and Patent Dates

• The application number and date of application are crucial for understanding the timeline of the patent.
• The date of patent issuance is also listed.

Classifications

• The International Patent Classification (IPC) and national classification codes help categorize the invention. For example, the national classification code might specify the exact category within a broader field.

Title and Abstract

• The title of the invention is a brief description limited to 500 characters.
• The abstract provides a non-technical summary of the invention.

References and Field of Search

• References include U.S. and foreign patent documents and other publications cited as related prior art.
• The field of search indicates the classifications consulted by the patent examiner during the prior art search.

Applicants, Inventors, and Assignees

• The applicant is the person, company, or organization that filed the application.
• The inventors are listed separately.
• The assignee is the owner of the patent at the time it was issued.

Drawings Section

The drawings section is critical for visualizing the technical details of the invention. Here are some key points:

Requirements and Guidelines

• Drawings must conform to drafting guidelines set by the patent office.
• They must be labeled clearly and provide enough detail for the reader to understand the invention’s design and use[1].

Types of Drawings

• Black and white drawings are standard, but photographs are permitted in specific cases where they provide clearer illustrations.
• For inventions like cell cultures or crystalline structures, photographs may be necessary.

Specification

The specification is a detailed written description of the invention.

Description of the Invention

• It includes a discussion of related prior art, a description of the drawings, and how the invention solves a specific technical problem.
• The preferred embodiment of the invention is also described in detail[1].

Sufficiency of Description

• The specification must be detailed enough so that anyone of ordinary skill in the same technical field can understand and replicate the invention.

Claims

The claims section is perhaps the most critical part of a patent document as it defines the scope of protection.

Structure of Claims

• Claims are paragraphs located at the end of the specification, preceded by phrases like “I claim” or “What is claimed.”
• Patents must have at least one claim, but most have several, and some have hundreds[1].

Example of a Claim

• For instance, a claim might read: "A portable electronic device, comprising: a first housing; a second housing coupled to the first housing and movable relative thereto between a closed position and an open position; an antenna positioned in the first housing; a low frequency shield coupled to the antenna; and a high frequency chassis resonator coupled to the low frequency shield."

Legal Boundaries

• Claims define the legal boundaries of the invention, similar to how a property deed defines physical boundaries of land.

Analyzing the Scope of Patent 3,862,319

To analyze the scope of Patent 3,862,319, one would need to carefully review the claims and specification.

Identifying Key Elements

• Identify the main components and features described in the claims.
• Understand how these components interact and the specific technical problem they solve.

Comparing with Prior Art

• Review the references cited in the patent to understand how the invention differs from prior art.
• Analyze the field of search to see which classifications were consulted, indicating the broader context of the invention.

Evaluating the Claims

• Each claim should be evaluated for its specificity and breadth.
• Determine if the claims are independent or dependent, and how they relate to each other.

Patent Landscape and Related Patents

Understanding the patent landscape involves looking at related patents and applications.

Global Dossier and Common Citation Document

• Tools like the Global Dossier and Common Citation Document (CCD) can help in identifying related applications and prior art cited by multiple offices[4].

International Patent Offices

• Searching databases from other international intellectual property offices, such as the European Patent Office (EPO) or the World Intellectual Property Organization (WIPO), can provide a broader view of the patent landscape[4].

Practical Applications and Implications

The scope and claims of a patent have significant practical implications.

Enforcement and Litigation

• The clarity and specificity of claims can affect the ease of enforcing the patent and defending against infringement claims.
• A well-defined scope can help in litigation by clearly delineating what is protected and what is not.

Licensing and Collaboration

• The scope of the patent can influence licensing agreements and collaborations. Clear claims help in negotiating terms and ensuring that all parties understand what is being licensed.

Innovation and Development

• Understanding the scope of existing patents can guide further innovation and development by identifying areas not already protected.

Key Takeaways

• Bibliographic Data: The front page of a U.S. patent contains crucial bibliographic data identified by INID codes.
• Drawings and Specification: Drawings and the specification provide detailed technical information about the invention.
• Claims: Claims define the legal boundaries of the invention and must be clear and specific.
• Patent Landscape: Understanding related patents and applications is essential for navigating the patent landscape.
• Practical Implications: The scope and claims of a patent have significant implications for enforcement, licensing, and innovation.

FAQs

Q: What is the purpose of the INID codes on the front page of a U.S. patent?

A: INID codes help in quickly locating specific information on the front page of a U.S. patent, such as the document number, application date, and classification codes.

Q: Why are drawings important in a patent document?

A: Drawings provide visual details of the invention, helping readers understand its design and use. They must conform to specific drafting guidelines.

Q: How do claims define the scope of a patent?

A: Claims define the legal boundaries of the invention by specifying what is protected. They must be clear, specific, and sufficient to distinguish the invention from prior art.

Q: What tools can be used to analyze the patent landscape?

A: Tools like the Global Dossier, Common Citation Document (CCD), and databases from international intellectual property offices can help in identifying related applications and prior art.

Q: How do the scope and claims of a patent impact practical applications?

A: The scope and claims affect enforcement, licensing agreements, and further innovation by clearly defining what is protected and guiding development in unprotected areas.

Sources

1. Guides.library.queensu.ca: How to Read a U.S. Patent - Patents and Designs - Research Guides.
2. USA.gov: U.S. Patent and Trademark Office (USPTO).
3. USPTO.gov: Patent Claims Research Dataset.
4. USPTO.gov: Search for patents - USPTO.
5. ACUS.gov: U.S. Patent Small Claims Court.

Drugs Protected by US Patent 3,862,319

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate