Daniel P. Williams is a partner with McDonnell Boehnen Hulbert & Berghoff LLP. Mr. Williams concentrates his practice in preparing and prosecuting high-quality patent applications in a number of high-tech areas. In particular, he has extensive patent-prosecution experience in telecommunications, directed to and involving infrastructure elements such as mobile stations and base stations, as well as protocols such as CDMA, EV-DO, WiMax, and others. More specifically, he has experience with concepts and mechanisms such as preferred roaming list (PRL), slot cycle index, frame error rate (FER), packet error rate (PER), signal-to-noise ratio (SINR), carrier-frequency selection, neighbor lists, channel-list messages, forward and reverse-link waveform architecture, reverse activity bit (RAB), reverse-link transitional probabilities, control-channel bit rates, carrier-frequency selection, etc.
Furthermore, Mr. Williams has experience prosecuting applications involving Wi-Fi (IEEE 802.11) networks, location-based services, digital rights management, Mobile IP, VoIP, E-911 services, Domain Name Service (DNS), wireless local loop (WLL), Session Initiation Protocol (SIP) applications, third-party call control (3PCC), network address translation (NAT), Internet security protocols (IPSec), cable-delivered data services, the TCP/IP protocol suite, surveillance of packet-based communications, database-searching techniques, on-board vehicle diagnostic systems, as well as many other technologies. He also has experience in a number of other technical areas, including software development, operating systems, and microprocessor architecture, as well as in both patent and trade-secret litigation.
Mr. Williams is also the inventor of U.S. Patent No. 7,130,664.