46 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in May 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
3
Ending by 2030
May 2027
Next term end
16
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Sep 2029 · High confidence
Also notable
Ends Feb 2034 · High confidence
Also notable
Ends Mar 2033 · High confidence
System and Method for Locating, Tracking, And/Or Monitoring the Status of Personnel And/Or Assets Both Indoors and Outdoors
US 9,448,072
The most cited patent in this portfolio, cited by 446 later US patents, top 1% of utility patents granted in 2016 in our data. Protection runs to 2029.
Collaborative Creation of Indoor Maps
US 9,733,091
Cited by 104 later US patents, top 5% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
System and Method for Localizing a Trackee at a Location and Mapping the Location Using Inertial Sensor Information
US 8,751,151
Cited by 129 later US patents, top 5% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2033.
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 Jan 16, 2027The maintenance fee for Collaborative Creation of Indoor Maps (US 10,352,707) comes due Jan 16, 2027. Unpaid by Jul 16, 2027, it lapses early.
- 2 fees due Feb 27, 2027
- 2 fees due Mar 3 to 29, 2027 · next Mar 3
- 1 fee due Jun 5, 2027The maintenance fee for Methods for Generating and Updating Building Models (US 11,836,857) comes due Jun 5, 2027. Unpaid by Dec 6, 2027, it lapses early.
- 1 fee due Aug 25, 2027The maintenance fee for Fusion of Sensor and Map Data Using Constraint Based Optimization (US 10,571,270) comes due Aug 25, 2027. Unpaid by Feb 25, 2028, it lapses early.
- 2 fees due Sep 24 to 29, 2027 · next Sep 24
- 4 fees due Oct 7 to 26, 2027 · next Oct 7
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
What they patent
The 5 largest of its 16 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Collaborative Creation of Indoor Maps | 9 in force | to Sep 2035 |
| Methods Resolving the Elevation of a Tracked Personnel or Assets | 8 in force | to Mar 2036 |
| Mapping Complex Building Models | 4 in force | to Jan 2040 |
| Mapping and Tracking System with Features in Three-Dimensional Space | 4 in force | to Sep 2035 |
| Methods for Improved Heading Estimation | 3 in force | to Sep 2035 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,706,414 | Method and System for Locating and Monitoring First Responders In force · High confidence | In force | High confidence | |
| US 9,448,072 | System and Method for Locating, Tracking, And/Or Monitoring the Status of Personnel And/Or Assets Both Indoors and Outdoors In force · High confidence | In force | High confidence | |
| US 8,688,375 | Method and System for Locating and Monitoring First Responders In force · High confidence | In force | High confidence | |
| US 10,750,155 | Mapping and Tracking System with Features in Three-Dimensional Space In force · High confidence | In force | High confidence | |
| US 10,805,595 | Mapping and Tracking System with Features in Three-Dimensional Space In force · High confidence | In force | High confidence | |
| US 11,140,379 | Mapping and Tracking System with Features in Three-Dimensional Space In force · High confidence | In force | High confidence | |
| US 8,930,163 | Method for Step Detection and Gait Direction Estimation In force · High confidence | In force | High confidence | |
| US 8,751,151 | System and Method for Localizing a Trackee at a Location and Mapping the Location Using Inertial Sensor Information In force · High confidence | In force | High confidence | |
| US 9,146,113 | System and Method for Localizing a Trackee at a Location and Mapping the Location Using Transitions In force · High confidence | In force | High confidence | |
| US 9,664,521 | System and Method for Localizing a Trackee at a Location and Mapping the Location Using Signal-Based Features In force · High confidence | In force | High confidence |
Also on record, not counted in the 46: 1 application abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.