"Everything that can be invented has been invented."
- Charles H. Duell, 
Commissioner, U.S. Office of Patents, in 1899 report to Congress advocating the closing of the US Patent Office.


TimeDerivative Associates are experts in Intellectual Property assessment. In the USA, regarding intellectual property cases

We not only assess intellectual property, but have invented extensively on behalf of our clients, and account for dozens of US patents and applications on topics as diverse as:

  • Ultra-wideband (UWB) high data-rate communications
  • UWB communications protocols
  • Encryption methods
  • Antenna systems for hand-held radios, and for base stations, and for satellite systems
  • Transceiver antennas
  • Location systems and methods
  • Communication system with diversity transmit and receive
  • Spread spectrum signaling
  • Voice compression techniques
  • Doppler frequency shifts compensation for satellite communication systems 
  • Radio frequency power amplifier having variable output power
  • Acknowledge back paging system


TimeDerivative, Inc. 
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