US 7640332

US Patent 7640332, titled "System and method for hot deployment/redeployment in grid computing environment," provides a technique for efficient application deployment and redeployment in grid computing environments.

Here is a summary of the patent:

• Title: System and method for hot deployment/redeployment in grid computing environment
• Assignee: Valtrus Innovations Limited
• Inventors: Sanjay Dahiya
• Filing Date: December 20, 2007
• Issue Date: December 29, 2009
• Abstract: A technique for hot deploying/redeploying applications in a grid computing environment to improve operating efficiency and reduced overhead. This is achieved by notifying a client application manager on one or more grid nodes about the data transfer protocol to use when a new version of an application release bundle is received by a repository server. The new version is then hot deployed/redeployed on running application servers in the associated grid node using a suitable hot deployment plug-in based on the specified data transfer protocol by each client application manager.

Plain-Language Overview of Independent Claims:

• Independent Claim 1 (Method Claim): This claim describes a method for "hot" deployment or redeployment of applications in a grid computing environment without interruption. The process involves:

  1. Adding a new version of an application package (release bundle) to a central storage (repository server).
  2. A discovery module then identifies which grid nodes are currently running the application corresponding to this new package.
  3. A client application manager on each identified grid node is informed about the new application version and the specific data transfer method (protocol) to use.
  4. Finally, this client application manager uses an appropriate hot deployment software component (plug-in), chosen based on the specified data transfer protocol, to deploy or redeploy the new application version on the actively running application servers on its grid node.

• Independent Claim 9 (Computer-Readable Medium Claim): This claim covers a computer-readable medium that stores program code. When executed by a computer system, this code performs the same hot deployment/redeployment method as described in Claim 1.

• Independent Claim 14 (Computer System Claim): This claim describes a computer system hardware, including a processor and memory, that is configured to perform the hot deployment/redeployment method as described in Claim 1. The memory stores the instructions that enable the processor to execute the method.

Litigation and Reexamination Status (as of April 26, 2026):

The patent 7640332 is Active and is projected to expire on September 1, 2028.

Several litigation cases related to this patent family have been filed across different US District Courts, including:

• Multiple cases in the Texas Eastern District Court (e.g., 2:25-cv-00081, 2:25-cv-00516, 2:25-cv-00517, 2:25-cv-00080).
• A case in the California Northern District Court (3:26-cv-00363).
• A case in the Washington Western District Court (2:25-cv-01859).
• A case in the New York Southern District Court (1:25-cv-06138).

Additionally, a PTAB (Patent Trial and Appeal Board) case, IPR2026-00039, was filed but not instituted procedurally.

Regarding reexamination, a Request for Reexamination (RR) was filed on November 25, 2025 (effective date September 3, 2025). A "Reexamination decision confirms claims" (CONR) was issued on March 17, 2026, with a reexamination certificate. The specific details of what claims were confirmed or changed are not detailed in the provided snippets, but it indicates the claims survived the reexamination process.
Given the current date of April 26, 2026, the information about litigation and reexamination from the provided Google Patents page seems up-to-date. I did not perform additional live web searches as the provided authoritative patent text already contained the necessary information.