Extensions

Patent Term and Application History for U.S. Patent No. 11,374,508

As of May 1, 2026, the following details pertain to the prosecution history and term of U.S. Patent No. 11,374,508.

Patent Term Adjustments (PTA) & Extensions (PTE)

• Patent Term Adjustment (PTA): There is no Patent Term Adjustment indicated for this patent. The term has not been extended due to delays by the USPTO during prosecution.
• Patent Term Extension (PTE): There is no Patent Term Extension indicated for this patent. PTE is typically granted for delays caused by regulatory review (e.g., by the FDA) and is not applicable here.

Continuity and Application History

U.S. Patent No. 11,374,508 issued from U.S. Patent Application No. 16/866,028, which was filed on May 4, 2020. This application is part of a larger family of patents and claims priority to earlier filings.

• Type of Application: Continuation
• Parent Application: This application is a continuation of U.S. Patent Application No. 16/433,348 (now U.S. Patent No. 10,673,358), filed on June 6, 2019.
• Divisional Applications: There are no divisional applications stemming from this patent's direct parent application.

Patent Family Members

This patent is part of an extensive patent family that claims a priority date of December 3, 2012, based on the original Chinese patent application CN201210509493.2. This early priority date is a critical factor in any validity analysis. The U.S. branch of this family includes a series of continuation patents, indicating a strategy to pursue claims of varying scope and focus over time.

Key U.S. patents and applications in this family include:

• U.S. Patent No. 9,800,182: The original U.S. patent in this family, filed December 2, 2013.
• U.S. Patent No. 10,374,529: A continuation of the application leading to the '182 patent.
• U.S. Patent No. 10,673,358: Another continuation in the chain, which is the direct parent of the '508 patent.
• U.S. Patent No. 10,291,158: Another continuation within the family.

Projected Expiration Date

The term of a U.S. patent is generally 20 years from the filing date of the earliest U.S. non-provisional application to which it claims priority. In a chain of continuation applications, this means the term is calculated from the filing date of the first application in the chain, not the filing date of the specific continuation application.

• Earliest U.S. Filing Date: December 2, 2013 (from U.S. Patent Application No. 14/094,086, which issued as US 9,800,182 B2).
• Standard 20-Year Term: Adding 20 years to the earliest filing date results in an expiration date of December 2, 2033.
• Adjusted Expiration: Public records indicate an adjusted expiration date of May 24, 2034. The discrepancy between the standard 20-year term and the listed adjusted expiration date is noted but the specific calculation leading to this adjustment is not detailed in the available public data. It is possible there were un-obvious prosecution delays that resulted in an extension. For the purpose of this analysis, the publicly listed adjusted date is considered the projected expiration.

Projected Expiration Date: May 24, 2034