Broadcom holds the most patents related to WPAN (Bluetooth and Zigbee) standards, followed by Samsung Electronics, Nokia, Qualcomm, and Texas Instruments. An analysis of over 2000 patents identified more than 290 as being key to IEEE 802.15.1, IEEE 802.15.4, and Bluetooth Core 2-4 specifications. The document provides a ranking of the top patent holders for wireless personal area network technologies.