The Patent Finder

Guangdong Polytechnic Normal University

17 patents currently held · Updated Nov 15, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Mar 2041
Next term end

When these terms end

Held patents by the year their term ends
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Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 1 fee due Dec 20, 2026
    The maintenance fee for Fruit picking method based on visual servo control robot (US 11,678,609) comes due Dec 20, 2026. Unpaid by Jun 21, 2027, it lapses early.
  • 1 fee due Feb 28, 2027
    The maintenance fee for Fruit picking method based on three-dimensional parameter prediction model for fruit (US 11,737,393) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
  • 1 fee due Mar 19, 2027
    The maintenance fee for Training method, evaluation method, electronic device and storage medium (US 11,763,452) comes due Mar 19, 2027. Unpaid by Sep 20, 2027, it lapses early.
  • 1 fee due May 14, 2027
    The maintenance fee for Concentrated Solar Power Generation System (US 11,815,291) comes due May 14, 2027. Unpaid by Nov 15, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 term has ended since Aug 17, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 11,163,321Obstacle-avoiding spraying method and device for plant protection unmanned aerial vehicle, computer device and storage medium
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,232,563Crop yield prediction method and device based on multi-level variable analysis
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,297,820Multilevel cooperation-based unmanned aerial vehicle spraying operation method and device
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,273,385Method for improving health of elderly person based on 5G signal transmission technology
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,353,893Obstacle avoiding method and apparatus for unmanned aerial vehicle based on multi-signal acquisition and route planning model
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,815,291Concentrated Solar Power Generation System
In force
 · High confidence
In forceHigh confidence
US 11,678,609Fruit picking method based on visual servo control robot
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,616,702Method and apparatus for differentially optimizing quality of service QoS
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,605,213Citrus Identification Method Based on Roundness Integrity Correction
In force
 · High confidence
In forceHigh confidence
US 11,737,393Fruit picking method based on three-dimensional parameter prediction model for fruit
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 17 patents shown.
Pro members see all 17.
Pro members: see all 17 patents
Also on record, not counted in the 17: 2 lapsed for an unpaid fee. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

1 pending · 1 abandoned · 4 no status recorded

List them

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited