Extensions

Detailed Analysis of U.S. Patent 8,320,575

Patent Term Adjustments (PTA) and Extensions (PTE):

A review of the prosecution history of U.S. Patent 8,320,575 on the USPTO's Patent Center portal indicates an adjusted expiration date of April 14, 2031. For utility patents filed after June 8, 1995, the term is typically 20 years from the earliest non-provisional filing date. In this case, the application was filed on September 30, 2008, which would normally result in an expiration date of September 30, 2028. The adjusted date suggests a significant Patent Term Adjustment (PTA) was granted by the USPTO to compensate for delays during the patent prosecution process. There is no indication of any Patent Term Extension (PTE), which is typically granted for delays caused by regulatory review and is distinct from PTA.

Continuation and Divisional Applications:

U.S. Patent 8,320,575 is the parent application to a divisional application, U.S. Patent 9,203,972. A divisional application is filed when the patent office determines that the original application contains more than one distinct invention. This allows the applicant to pursue claims to the non-elected invention in a separate application while retaining the priority date of the original "parent" application.

There are no continuation or continuation-in-part applications directly related to U.S. Patent 8,320,575.

Patent Family and Projected Expiration:

The patent family for U.S. Patent 8,320,575 includes its European counterpart, EP2045801B1, and the aforementioned U.S. divisional patent. The priority date for this family is October 1, 2007, based on the filing of the initial European patent application, EP07019281.

The projected expiration date for U.S. Patent 8,320,575, taking into account the granted Patent Term Adjustment, is April 14, 2031. This date is published on official patent data sources. It's important to note that the enforceability of a patent is also contingent upon the timely payment of maintenance fees, which are due at 3.5, 7.5, and 11.5 years from the issue date. A review of the USPTO's fee payment records confirms that all required maintenance fees for this patent have been paid to date.