Extensions

Analysis of Patent Term, Adjustments, and Family for U.S. Patent No. 5,768,528

Date of Analysis: April 30, 2026

This analysis details the term, continuity data, and related family members for U.S. Patent No. 5,768,528.

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

• PTA/PTE Status: U.S. Patent No. 5,768,528 is not eligible for Patent Term Adjustment (PTA). The provisions for PTA were established by the American Inventors Protection Act of 1999 and apply to applications filed on or after May 29, 2000. Since the '528 patent was filed on May 24, 1996, it predates the enactment of the PTA system. There is no indication of any Patent Term Extension (PTE), which is typically granted for delays related to regulatory review and is uncommon for software patents.

Continuity and Divisional Applications

A review of the USPTO's public records for U.S. Patent No. 5,768,528 indicates that this patent has no parent or child applications.

• Continuation Applications: There are no continuation applications that claim priority to the '528 patent.
• Divisional Applications: There are no divisional applications that claim priority to the '528 patent.

This indicates that the application which resulted in the '528 patent was a standalone filing and was not part of a broader prosecution strategy involving subsequent continuing applications in the United States.

Patent Family Members

While there are no direct continuations or divisionals in the U.S., the application for the '528 patent served as a priority document for international filings. The known patent family members are:

• United States (US):

  • Application Number: US08/653,611 (Filed: May 24, 1996)
  • Patent Number: US5768528A (Granted: June 16, 1998)

• Australia (AU):

  • Application Number: AU26083/97A (Filed: April 8, 1997)
  • Title: Client-server system for delivery of on-line information

• World Intellectual Property Organization (WO):

  • Application Number: PCT/US1997/005691 (Filed: April 8, 1997)
  • Publication Number: WO1997045786A1
  • Title: Client-server system for delivery of on-line information

These filings indicate an effort to seek patent protection in multiple jurisdictions based on the original U.S. application.

Projected Expiration Date

The expiration date of a U.S. patent is determined by its filing date and the laws in effect at that time.

• Applicable Law: For patent applications filed on or after June 8, 1995, the patent term is 20 years from the earliest effective filing date.
• Filing Date: The application for US5768528 was filed on May 24, 1996.
• Calculation: Adding 20 years to the filing date (May 24, 1996) results in a projected expiration date.

Projected Expiration Date: May 24, 2016

Based on this calculation, U.S. Patent No. 5,768,528 has expired and is no longer in force as of the date of this analysis. The legal status is "Expired - Lifetime." This confirms that the patent completed its full statutory term and was not abandoned for failure to pay maintenance fees.

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Disclaimer: This analysis is for informational purposes only and is based on publicly available data from the USPTO and other patent databases. It does not constitute a legal opinion on the patent's status. The USPTO does not calculate official expiration dates.