Obviousness

The analysis of obviousness for US patent 12321184 under 35 U.S.C. § 103 requires identifying combinations of prior art references and explaining the motivation for such combinations.

Prior Art Information from Google Patents Page:
The "Prior art" section of the Google Patents page for US12321184B2 provides the following:

• Prior art keywords: fluid, computing system, handling, commands, command
• Prior art date: 2012-12-07

Absence of Specific Prior Art References:
The provided "Prior art section" of the Google Patents page for US12321184B2, as instructed, does not list specific patent documents or other publications as prior art references. Instead, it provides keywords and a priority date. Therefore, a direct analysis combining named prior art references cannot be performed based solely on the provided information.

General State of the Art (as described in the patent's "Background of the Invention"):
The patent's "Background of the Invention" section itself describes the general state of the art at the priority date (December 7, 2012) as including Supervisory Control and Data Acquisition (SCADA) systems for remote monitoring of fluid-handling devices. The patent explicitly identifies several deficiencies in these existing SCADA systems:

1. Network dependency: Many SCADA systems "fail when a network connection is lost," leading to remote logic ceasing control when disconnected.
2. Software burden: Some SCADA systems "require the installation of special-purpose software on a computing device in order to exercise control remotely," which deters users due to configuration burdens.

The claimed invention, therefore, seeks to overcome these known problems in SCADA systems.

Obviousness Analysis based on General Knowledge of a PHOSITA:

Despite the lack of specific references, a person having ordinary skill in the art (PHOSITA) in 2012 would have been generally aware of these existing SCADA systems and their limitations, as outlined in the patent's background. The "prior art keywords" (fluid, computing system, handling, commands, command) further reinforce the idea that systems for remote control of fluid-handling devices using computing systems and commands were well-known.

The claims of US12321184 generally describe:

• A first computing system (site master-controller) receiving commands (encoded in a first protocol) from a remote user computing device.
• The commands are based on user inputs to a command interface (e.g., web-based).
• User authorization is determined based on an account.
• The first computing system determines target states over time for fluid-handling devices.
• The first computing system translates these commands into device-specific protocols (a plurality of protocols different from the first protocol).
• These translated commands cause a local controller of the fluid-handling device to reach the target state, with feedback.
• A key feature is that the first computing system is "operative to maintain control of the fluid handling devices in an absence of an external network connection" (Claim 1).

Motivation to Combine Known Elements:

A PHOSITA, aware of the deficiencies in existing SCADA systems (as described in the Background of the Invention), would have been motivated to combine known technological elements to improve upon them.

1. Addressing Network Dependency (Local Autonomy):

   • Known Element: SCADA RTUs or PLCs were already capable of executing local control logic and storing programs. The concept of local control, even without continuous communication with a central server, was well-established in industrial automation.
   • Motivation: The explicit problem of SCADA systems failing upon network loss would strongly motivate a PHOSITA to design the remote site controller (the "first computing system" or site master-controller) to operate autonomously or to complete initiated commands even if the network connection to the central server is interrupted. This would involve programming the local controller to store sequences of commands or control logic (e.g., "determine a plurality of different target states over time") and execute them independently, relying on local feedback, rather than continuous commands from the central server.

2. Addressing Protocol Diversity (Protocol Translation):

   • Known Element: Fluid-handling devices often use various proprietary or standard industrial protocols (e.g., Modbus, Ethernet/IP, HART, 4-20mA analog signals), as mentioned in the patent's detailed description (e.g., Modbus RTU, binary/analog signals, Ethernet protocol for control buses 66, 64, 62). Protocol converters and gateways were common in industrial automation to allow different systems to communicate.
   • Motivation: Given the variety of fluid-handling devices and their differing communication protocols, a PHOSITA would be motivated to introduce a translation layer (the "command translators 74") in the site master-controller to convert generic commands from a central system into specific protocols understood by the various local devices. This would simplify the central control interface and allow for greater flexibility in integrating diverse equipment. The patent itself states, "Translating commands may abstract the details of the site-specific implementations away from those implementing the command-center server 14, facilitating relatively rapid deployment of new features or sites."

3. Addressing Software Burden (Web-based Interface):

   • Known Element: Web servers and web-based interfaces for remote access and control were widely known and implemented in various fields by 2012. Many enterprise systems were moving towards web-based access to reduce client-side software installation.
   • Motivation: The problem of requiring "special-purpose software" would provide a strong motivation for a PHOSITA to implement a web-based command interface (as facilitated by the "web server 32" on the "command-center server 14") that could be accessed via a standard web browser on a remote user device. This would eliminate the need for cumbersome software installations and updates, making remote control more accessible and user-friendly.

4. User Authorization:

   • Known Element: User authentication and authorization systems, often tied to user accounts stored in a data store, were standard practice for any remote access system by 2012, particularly in industrial contexts where security and access control are critical.
   • Motivation: To ensure secure and controlled access to sensitive industrial equipment, a PHOSITA would routinely implement an authorization mechanism (e.g., using "account records" in "data store 34") to verify that a user is permitted to issue commands to specific fluid-handling devices, especially when moving to a more accessible web-based interface.

In summary, the core elements of the claimed invention, when viewed through the lens of a PHOSITA in 2012, appear to be logical improvements to known SCADA systems, driven by the explicit problems identified in the patent's own background. The motivation would stem from a desire to create a more robust (network-independent), versatile (protocol-agnostic), and user-friendly (web-based, no special software) remote control system for geographically distributed fluid-handling devices.