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US Patent 5852810: Further Details

As of April 26, 2026, here are further details regarding US Patent 5852810:

Patent Term Adjustments (PTA)

Patent Term Adjustments (PTA) are additions to the 20-year lifespan of a U.S. patent, intended to compensate for delays caused by the USPTO during the prosecution of a utility or plant patent application. The America Inventors Protection Act of 1999 established PTA, providing day-for-day adjustments for certain USPTO administrative delays. These delays include, for example, the USPTO failing to:

• Issue an office action within 14 months after application filing.
• Respond to a reply or appeal within four months.
• Issue a patent within four months after payment of an issue fee.
• Issue a patent within 36 months from the filing date.

The PTA calculation is performed at the time the patent is issued and is included in the Issue Notification Letter.

Based on the provided information, US Patent 5852810 has an issue date of December 22, 1998, and a filing date of January 29, 1996. PTA provisions were established in 1999 and generally apply to applications filed on or after May 29, 2000. Since US5852810 was filed on January 29, 1996, it predates the effective date for PTA. Therefore, there are no patent term adjustments for US Patent 5852810.

Patent Term Extensions (PTE)

Patent Term Extensions (PTE) are available under the Hatch-Waxman Act (35 U.S.C. § 156) for patents on certain human drugs, food or color additives, medical devices, animal drugs, and veterinary biological products. The purpose of PTE is to restore a portion of the patent term lost while the patent holder awaits premarket government approval from a regulatory agency. The maximum length of a PTE is five years.

US Patent 5852810 relates to a "Geographic specific information search system and method" for housing information. This patent does not fall into the categories of products eligible for PTE (human drugs, food/color additives, medical devices, animal drugs, or veterinary biological products). Therefore, there are no patent term extensions for US Patent 5852810.

Continuation Applications

A continuation application is a second application for the same invention claimed in a prior non-provisional application and is filed before the original application is abandoned, withdrawn, or patented. This allows for new claims to be added or old claims to be further prosecuted. The filing of continuation applications is subject to the co-pending requirements of 35 U.S.C. § 120, meaning each subsequent application cannot be filed after the parent application has issued, expired, or been abandoned.

The provided patent text and Google Patents information for US5852810 does not explicitly list any continuation applications.

Divisional Applications

A divisional application is a type of continuing application that can be filed when a parent application claims two or more independent and distinct inventions, and the USPTO requires the application to be restricted to one of them. The divisional application benefits from the filing date of the original application, provided it complies with the requirements of 35 U.S.C. § 120 and is directed solely to subject matter described and claimed in the original application as filed. A divisional application must be filed before the issuance of the patent on the other application.

The provided patent text and Google Patents information for US5852810 does not explicitly list any divisional applications.

Related Family Members

The term "patent family" refers to a set of patent applications and patents filed in various countries to protect the same invention. The provided Google Patents page for US5852810 lists one "Priority Application" and one "Family Application," both referring back to US08/591,927, which is the application number for US5852810 itself. This indicates that there are no explicitly listed foreign equivalents or other related U.S. applications beyond the initial filing leading to this patent in the provided information.

Projected Expiration Date

The original anticipated expiration date for US Patent 5852810 was January 29, 2016. Since the patent was filed on January 29, 1996, the patent term would ordinarily be 20 years from its filing date, according to the Uruguay Round Agreements Act (effective for applications filed on or after June 7, 1995).

As established above, there are no Patent Term Adjustments (PTA) or Patent Term Extensions (PTE) for this patent.

Therefore, the patent US5852810 expired on January 29, 2016. The legal status listed on Google Patents as "Expired - Fee Related" confirms this.