Obviousness — US Patent 7383209

Obviousness Analysis of U.S. Patent 7,383,209 under 35 U.S.C. § 103

This analysis evaluates whether the invention claimed in U.S. Patent 7,383,209 would have been obvious to a person having ordinary skill in the art (PHOSITA) at the time the invention was made. The legal standard for obviousness under 35 U.S.C. § 103 prevents the patenting of an invention if the differences between the invention and the prior art are such that the subject matter as a whole would have been obvious to a PHOSITA. The analysis relies on the prior art references identified in the preceding section.

Person Having Ordinary Skill in the Art (PHOSITA)

As of the patent's priority date of June 20, 1995, a PHOSITA would be an individual with a Bachelor's degree in Computer Science or a related field, and several years of experience in client-server networking, database management, and emerging Internet technologies. This person would be familiar with the architecture of the World Wide Web, including HTTP, URLs, and web browsers, as well as data capture technologies like barcode scanning and their application in inventory and data retrieval systems.

Claim Scope and Core Concept

The independent claims (1 and 23) describe a system and method based on a key concept of indirection for network resource access. The process involves:

Automatically reading a simple index (e.g., a UPC from a barcode) at a local computer.
Transmitting this index to a remote routing computer.
The routing computer uses a table (database) to look up a pointer (e.g., a URL) that corresponds to the index.
The pointer is sent back to the local computer, which then uses it to connect to and retrieve data from an information computer.

This method solves the problem of having to manually enter long network addresses or encode them directly into impractically long barcodes.

Combinations of Prior Art Rendering the Claims Obvious

1. Combination of Wang ('655) and the Known State of the World Wide Web (circa 1995)

Wang ('655) Disclosure: As established in the prior art analysis, Wang discloses a complete system of indirection for data retrieval. It teaches scanning a barcode containing a document identifier (index), sending that identifier to a central computer (routing computer), looking up the document's location (pointer) in a database (table), and retrieving the document (information) from a database server (information computer). This method mirrors the steps laid out in claim 1.
State of the Art (World Wide Web): By mid-1995, the World Wide Web was a rapidly expanding information system. URLs were the standard mechanism for addressing resources (web pages), and web browsers were the standard tool for retrieving them. A PHOSITA would have been well aware that manually typing long and complex URLs was a common and tedious user task.
Motivation to Combine: A PHOSITA, familiar with the problem of cumbersome URL entry, would have been motivated to apply the established and efficient data retrieval method taught by Wang to the new domain of the World Wide Web. Wang provided a blueprint for using a simple, scannable identifier to access a specific data object on a remote system. Applying this known technique to the Web would have been a straightforward adaptation. The motivation would be to replace Wang's proprietary document locator with a standard URL to achieve the same result—simplified access to a remote resource—in the context of the Web. This would have been an application of a known technique to a similar problem to yield a predictable result, which is a hallmark of obviousness.
Conclusion: The combination of Wang's method with the known architecture of the World Wide Web teaches all elements of claims 1 and 23. Wang provides the entire indirect lookup process, and the state of the art provides the specific type of network (Internet), pointer (URL), and information computer (Web server) to which Wang's method could be directly applied.

2. Combination of Wilz ('733) and Wang ('655) or Rhoads ('978)

Wilz ('733) Disclosure: Wilz identifies the problem of manual URL entry and proposes a solution: encoding the full URL directly into a barcode. This establishes the goal of using barcodes to automate web access. However, as noted in the '209 patent itself, this approach has a significant drawback: long URLs result in long, impractical barcodes. A PHOSITA would immediately recognize this limitation due to the known data density constraints of common barcode symbologies.
Wang ('655) / Rhoads ('978) Disclosure: Both Wang and Rhoads teach the exact solution to the problem inherent in Wilz's approach. They disclose using a short, unique identifier (index) to look up a more complex piece of location information (pointer) in a remote database. Rhoads is particularly relevant as it explicitly discusses linking a physical object to a network resource like a URL via a remote database lookup.
Motivation to Combine: A PHOSITA, starting with the idea from Wilz to use barcodes for web access, would be faced with the problem of barcode length. To solve this known engineering problem, they would look for established methods of data compression or indirection. The database lookup method taught by both Wang and Rhoads is a classic and well-known solution for this type of problem. A PHOSITA would have been motivated to replace Wilz's direct encoding of the URL with the indirect lookup system from Wang or Rhoads to make the barcode scannable, compact, and practical. This combination would allow for the benefits of Wilz's automated web access while overcoming its critical implementation flaw.
Conclusion: The combination of Wilz with either Wang or Rhoads would render claims 1 and 23 obvious. Wilz provides the context and problem (using barcodes to access URLs), while Wang or Rhoads provides the specific, known solution (indirection via a remote database lookup) that a PHOSITA would have been motivated to implement to create a functional and efficient system. The resulting combination would contain every element of the claimed invention.