Extensions

Patent Term Adjustments (PTA) and Patent Term Extensions (PTE) for US10221780

Patent Term Adjustment (PTA):
Patent Term Adjustment (PTA) is granted to compensate for certain delays incurred by the USPTO during the prosecution of a patent application. These delays are categorized as "A," "B," and "C" delays, relating to specific timeframes for USPTO actions (e.g., issuing a first office action within 14 months, issuing a patent within 36 months of filing). Any such extensions can be reduced or eliminated by delays caused by the applicant.

The provided patent text for US10221780 states an "Adjusted expiration" date of 2037-02-06. This indicates that Patent Term Adjustment has likely been applied to the patent, extending its term beyond the standard 20 years from its earliest filing date. The specific details of the PTA calculation (e.g., the number of days of "A", "B", and "C" delays, and any applicant delays) are typically found in the "Issue Notification Letter" and the patent's file wrapper in USPTO's Patent Center.

Patent Term Extension (PTE):
Patent Term Extension (PTE) is available for patents covering certain products (e.g., human drugs, food or color additives, medical devices, animal drugs) to restore some of the patent term lost during premarket regulatory review by agencies like the FDA.

US Patent 10221780, titled "Dual fuel lockout switch for generator engine," pertains to mechanical engineering and internal combustion engines, not to products requiring premarket government approval from a regulatory agency such as the FDA. Therefore, it is highly unlikely that US10221780 would be eligible for a Patent Term Extension (PTE) under 35 U.S.C. § 156.

Continuation and Divisional Applications

• Continuation Applications: A continuation application allows an applicant to pursue additional claims based on the same specification and drawings as a previously filed "parent" application, while retaining the parent's priority date. Continuation applications must be filed before the parent application issues or becomes abandoned.
• Divisional Applications: A divisional application is filed when a patent application claims more than one independent and distinct invention, and the USPTO requires the applicant to restrict the claims to one invention. The non-elected inventions can then be pursued in divisional applications, sharing the same priority date as the original application.

The provided "Priority Applications" and "Related Child Applications" sections in the patent text list several applications that claim priority from or are related to US10221780 (Application Number US14/738,060).

Priority Applications of US10221780 (US14/738,060):
US10221780 itself is the primary patent from application US14/738,060. The "Priority Applications" section of the Google Patents page lists US14/738,060 as its own priority, which is typical for the initial application in a family.

Applications Claiming Priority from US14/738,060:
The "Priority Applications" section also lists other applications that claim priority from the same priority date as US14/738,060 (June 12, 2015):

• US14/925,441 (US10697398B2) - "Batteryless dual fuel engine with liquid fuel cut-off"
• CA2930628A (CA2930628C) - "Batteryless dual fuel engine with liquid fuel cut-off"
• CA2930627A (CA2930627A1) - "Dual fuel lockout switch for generator engine"
• CN201610392379.4A (CN105971744A) - "Dual-fuel lock switch for generator engine"
• CN201610407234.7A (CN106089421A) - "There is the engine of double fuel without battery of liquid fuel stopper"
• US15/285,215 (US10393034B2) - "Fuel system for a multi-fuel internal combustion engine"
• US15/332,264 (US10167789B2) - "Dual fuel engine with liquid fuel cut-off"
• US16/191,503 (US11530654B2) - "Off-board fuel regulator for generator engine"
• US16/358,822 (US10697379B2) - "Tri fuel gen"
• US16/783,455 (US11492985B2) - "Off-board fuel regulator for generator engine"
• US16/946,438 (US11143145B2) - "Batteryless dual fuel engine with liquid fuel cut-off"
• US16/946,439 (US11143120B2) - "Fuel system for a multi-fuel internal combustion engine"
• US17/937,046 (US11840970B2) - "Dual fuel generator with remote regulator"
• US18/183,734 (US11905895B2) - "Dual fuel lockout switch for generator engine"
• US18/443,487 (US20240183319A1) - "Dual fuel lockout switch for generator engine" (Pending)
• US19/026,996 (US20250154911A1) - "Dual fuel lockout switch for generator engine" (Pending)

Related Child Applications (Explicitly listed as Continuation or Continuation-In-Part):
The "Related Child Applications" section specifically identifies the following:

• US14/925,441 (US10697398B2) - "Batteryless dual fuel engine with liquid fuel cut-off" is a Continuation-In-Part.
• US16/191,503 (US11530654B2) - "Off-board fuel regulator for generator engine" is a Continuation.

These entries clearly indicate that Champion Power Equipment Inc. has actively managed its patent portfolio through continuation and continuation-in-part applications, deriving multiple patents from the original filing of US10221780.

Related Family Members

The "Family Applications" section on the Google Patents page lists several related applications that share the same priority date (June 12, 2015), indicating they are part of the same patent family (Family ID=57010162). These include:

• US14/738,060 (US10221780B2) - Dual fuel lockout switch for generator engine (This patent)
• US16/191,503 (US11530654B2) - Off-board fuel regulator for generator engine
• US16/783,455 (US11492985B2) - Off-board fuel regulator for generator engine
• US17/937,046 (US11840970B2) - Dual fuel generator with remote regulator
• US18/183,734 (US11905895B2) - Dual fuel lockout switch for generator engine
• US18/443,487 (US2024018331A1) - Dual fuel lockout switch for generator engine (Pending)
• US19/026,996 (US20250154911A1) - Dual fuel lockout switch for generator engine (Pending)

The "Country Status" section also lists foreign family members:

• CN (1): CN105971744A - Dual-fuel lock switch for generator engine
• CA (1): CA2930627A1 - Dual fuel lockout switch for generator engine

These represent the broader international patent family covering similar or related inventions stemming from the original priority application.

Projected Expiration Date

The "Legal status" section of the Google Patents page for US10221780 explicitly states that the patent is "Active" and "expires 2037-02-06". This date already includes any Patent Term Adjustment (PTA) applied to the patent. [cite: The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed., Active , expires 2037-02-06]

The standard patent term for utility patents filed on or after June 8, 1995, is 20 years from the earliest filing date of the application. The original filing date for US10221780 (Application No. US14/738,060) is June 12, 2015. A 20-year term from this date would result in an expiration around June 12, 2035. The stated expiration date of February 6, 2037, indicates that the patent has received approximately 1 year and 7 months of Patent Term Adjustment. This adjustment would be due to delays by the USPTO during the examination process, consistent with PTA provisions.

No information suggests the application of a terminal disclaimer that would shorten the patent term.