Extensions — US Patent 9485621

US Patent 9485621 was granted on November 1, 2016, from an application filed on June 18, 2015, with a priority date of March 28, 2006.

Patent Term Adjustments (PTA):
Patent Term Adjustment (PTA) is a mechanism to extend the term of a U.S. patent to compensate for certain delays caused by the USPTO during the prosecution of a patent application. These delays include failing to:

Issue a first Official Action or notice of allowance within 14 months of filing.
Issue an action within four months of an applicant's response.
Issue the patent within four months of payment of the issue fee.
Issue a patent within three years of the actual filing date (with certain provisos).

The total PTA is added to the standard 20-year lifespan of the patent, but can be reduced by applicant-caused delays. The USPTO automatically determines and provides notice of any PTA no later than the patent's issue date.

The provided information does not explicitly state whether US9485621 received any Patent Term Adjustment. To determine the exact PTA for US9485621, one would typically need to consult the patent's issue certificate or its file wrapper on Patent Center.

Patent Term Extensions (PTE):
Patent Term Extension (PTE) is available for patents that claim certain human drug products, food or color additives, medical devices, animal drugs, and veterinary biological products, to restore time lost while awaiting premarket government approval from a regulatory agency like the FDA. Only one patent may be extended for a regulatory review period for any product.

Given that US9485621 relates to a "Method and system for monitoring a mobile station presence in a special area" and not to the types of products covered by 35 U.S.C. § 156 (e.g., human drugs, medical devices), it is highly unlikely to have received any Patent Term Extension.

Continuation Applications:
A continuation application is an application for an invention disclosed in a prior-filed, co-pending nonprovisional application. The disclosure must not introduce any new matter. The purpose is often to introduce a new set of claims and establish a right to further examination.

The patent text for US9485621 explicitly states in its "CROSS-REFERENCE TO RELATED APPLICATIONS" section that it "is a continuation of U.S. application Ser. No. 14/561,426, filed Dec. 5, 2014; which is a continuation of U.S. application Ser. No. 14/315,703, filed Jun. 26, 2014 and issued as U.S. Pat. No. 8,934,922 on Jan. 13, 2015; which is a continuation of U.S. application Ser. No. 14/250,517, filed Apr. 11, 2014 and issued as U.S. Pat. No. 9,042,910 on May 26, 2015; which is a continuation of U.S. patent application Ser. No. 12/294,641, filed Apr. 12, 2010 and issued as U.S. Pat. No. 8,738,040 on May 27, 2014; which claims priority to International Application No. PCT/EP2007/052939, filed Mar. 27, 2007; which claims benefit of the European Patent Application No. 06111804.8 filed Mar. 28, 2006". This indicates a series of continuation applications.

Divisional Applications:
A divisional application may be filed if two or more independent and distinct inventions are claimed in one application, and the Director of the USPTO requires the application to be restricted to one invention. A patent issuing from a divisional application, filed as a result of such a restriction requirement, can benefit from the filing date of the original application.

The provided patent text does not explicitly mention any divisional applications related to US9485621.

Related Family Members:
Based on the "CROSS-REFERENCE TO RELATED APPLICATIONS" section, the following are related family members:

U.S. application Ser. No. 14/561,426, filed Dec. 5, 2014
U.S. application Ser. No. 14/315,703, filed Jun. 26, 2014 (issued as U.S. Pat. No. 8,934,922 on Jan. 13, 2015)
U.S. application Ser. No. 14/250,517, filed Apr. 11, 2014 (issued as U.S. Pat. No. 9,042,910 on May 26, 2015)
U.S. patent application Ser. No. 12/294,641, filed Apr. 12, 2010 (issued as U.S. Pat. No. 8,738,040 on May 27, 2014)
International Application No. PCT/EP2007/052939, filed Mar. 27, 2007
European Patent Application No. 06111804.8 filed Mar. 28, 2006

Additionally, Google Patents lists US20150289096A1 as another version of the patent.

Projected Expiration Date:
For applications filed on or after June 8, 1995, the term of a patent (other than a design patent) generally ends 20 years from the date on which the application for the patent was filed in the United States, or, if the application claims benefit of an earlier-filed application under 35 U.S.C. 120, 121, 365(c), or 386(c), then 20 years from the date on which the earliest such application was filed. Foreign priority is not considered in determining the term.

US9485621 was filed on June 18, 2015, but claims priority back to European Patent Application No. 06111804.8 filed on March 28, 2006, via a chain of continuations and an international application. The earliest effective filing date for patent term calculation purposes, excluding foreign priority, is the filing date of the earliest U.S. application to which a benefit is claimed under 35 U.S.C. 120. In this case, that appears to be the filing date of U.S. patent application Ser. No. 12/294,641, filed April 12, 2010.

Therefore, the base patent term would typically be 20 years from April 12, 2010, which is April 12, 2030.

However, the Google Patents information for US9485621 states an "Anticipated expiration" date of 2027-03-27. This discrepancy suggests that either:

The base 20-year term is calculated from an even earlier application date, likely the International Application No. PCT/EP2007/052939 filed March 27, 2007, as the patent text states it "claims priority to" this international application. Twenty years from March 27, 2007, would be March 27, 2027. This aligns precisely with the anticipated expiration date provided by Google Patents.
There may have been terminal disclaimers filed against US9485621 or one of its parent applications, which can shorten the patent term.

Without specific information on any PTA or terminal disclaimers in the patent's official file history, the Google Patents "Anticipated expiration" date of 2027-03-27 is the most reliable figure available for the projected expiration.