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Patent Term and Family Analysis for US5905865

An analysis of the prosecution history and family data for US patent US5905865 reveals a straightforward patent term and a single, significant related family member in the form of a reissue patent.

Patent Term and Expiration Date

• Filing Date: The non-provisional application for US5905865 was filed on October 30, 1996. This date is the basis for calculating the patent's term.
• Patent Term: For patents filed after June 8, 1995, the term is 20 years from the earliest non-provisional filing date. Provisional applications do not count toward this 20-year term.
• Patent Term Adjustment (PTA) / Extension (PTE): The provisions for Patent Term Adjustment (PTA) to compensate for USPTO delays generally apply to applications filed on or after May 29, 2000. As US5905865 was filed in 1996, it was not eligible for PTA. There is no record of any Patent Term Extension (PTE), which is typically granted for regulatory delays and is not applicable here.
• Projected Expiration: Based on the October 30, 1996, filing date and a 20-year term, the patent was projected to expire, and did expire, on October 30, 2016. This is consistent with the "Ceased" status and "Anticipated expiration 2016-10-30" noted in the patent's record. The patent is no longer in force.

Continuity and Divisional Applications

• A review of the patent's prosecution history shows no continuation or divisional applications were filed claiming the benefit of the application that led to US5905865. The patent does not claim priority to any other non-provisional applications.

Patent Family and Reissue

The patent family for US5905865 consists of the original patent and one reissue patent.

• Original Patent:

  • Patent Number: US5905865
  • Application Number: 08/739,796
  • Filing Date: October 30, 1996
  • Issue Date: May 18, 1999

• Reissue Patent: The patent owner filed an application to have the original patent reissued, which is a process used to correct an error in the original patent.

  • Patent Number: USRE42103E1
  • Application Number: 09/860,259
  • Filing Date: May 18, 2001
  • Issue Date: February 1, 2011
  • Relationship: This reissue application is a "child" of the original '865 patent. A reissue patent expires on the same date that the original patent would have expired. Therefore, USRE42103E1 also expired on October 30, 2016.