Patent assignee · US · COMPANY

Skyhook Wireless, Inc.

124Patents
124Active
124Granted
60Portfolio score

Filing activity: Oct 28, 2005 → Jun 28, 2022 · 41 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7433694B2 Location beacon database Emerging Cross-Sectional Technologies 341 Active
US7305245B2 Location-based services that choose location algorithms based on number of detected access points within range of user device Emerging Cross-Sectional Technologies 263 Active
US7414988B2 Server for updating location beacon database Emerging Cross-Sectional Technologies 248 Active
US7403762B2 Method and system for building a location beacon database Emerging Cross-Sectional Technologies 246 Active
US7471954B2 Methods and systems for estimating a user position in a WLAN positioning system based on user assigned access point locations Electricity 220 Active
US7493127B2 Continuous data optimization of new access points in positioning systems Electricity 214 Active
US7474897B2 Continuous data optimization by filtering and positioning systems Electricity 206 Active
US7856234B2 System and method for estimating positioning error within a WLAN-based positioning system Electricity 200 Active
US7551579B2 Calculation of quality of wlan access point characterization for use in a wlan positioning system Electricity 199 Active
US7515578B2 Estimation of position using WLAN access point radio propagation characteristics in a WLAN positioning system Electricity 195 Active
US7769396B2 Location-based services that choose location algorithms based on number of detected access points within range of user device Emerging Cross-Sectional Technologies 194 Active
US7818017B2 Location-based services that choose location algorithms based on number of detected wireless signal stations within range of user device Emerging Cross-Sectional Technologies 189 Active
US8155666B2 Methods and systems for determining location using a cellular and WLAN positioning system by selecting the best cellular positioning system solution Electricity 182 Active
US7768963B2 System and method of improving sampling of WLAN packet information to improve estimates of Doppler frequency of a WLAN positioning device Electricity 181 Active
US7551929B2 Estimation of speed and direction of travel in a WLAN positioning system using multiple position estimations Electricity 180 Active
US7835754B2 Estimation of speed and direction of travel in a WLAN positioning system Electricity 151 Active
US7916661B2 Estimation of position using WLAN access point radio propagation characteristics in a WLAN positioning system Electricity 150 Active
US8054219B2 Systems and methods for determining position using a WLAN-PS estimated position as an initial position in a hybrid positioning system Physics 146 Active
US8090386B2 Estimation of speed and direction of travel in a WLAN positioning system Electricity 131 Active
US8014788B2 Estimation of speed of travel using the dynamic signal strength variation of multiple WLAN access points Electricity 129 Active
US8019357B2 System and method for estimating positioning error within a WLAN-based positioning system Electricity 123 Active
US7999742B2 System and method for using a satellite positioning system to filter WLAN access points in a hybrid positioning system Physics 116 Active
US8031657B2 Server for updating location beacon database Emerging Cross-Sectional Technologies 110 Active
US8837363B2 Server for updating location beacon database Emerging Cross-Sectional Technologies 98 Active
US8089399B2 System and method for refining a WLAN-PS estimated location using satellite measurements in a hybrid positioning system Physics 94 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.