In addition, as recently announced, MSV has added to its expansive developed holdings the entire patent portfolio of Celsat, one of the original developers of the hybrid satellite-terrestrial system concept.

This latest patent issuance, together with the Celsat acquisition, accelerates MSV¿s position as the leader in the forefront of ATC technology. "Early on, MSV recognized the criticality of developing ¿the best in class¿ ATC patent portfolio," stated Alexander H. Good, vice chairman and chief executive officer of MSV.

"MSV has had a sharp focus on the development of the most efficient and effective means to implement each and every element of ATC. If it touches an ATC system, MSV has thought long and hard about that technology and has an intricate matrix of patents covering all those components.

"I am confident our portfolio eclipses that of all others, and now that our patents are being issued I don¿t think there will be any doubt."

The most recent patent - Systems and Methods for Handover Between Space Based and Terrestrial Radioterminal Communications, and for Monitoring Terrestrially Reused Satellite Frequencies at a Radioterminal to Reduce Potential Interference - describes ways of minimizing uplink interference from ATC terminals to a satellite by handing over communications from the ATC to the satellite.

The patent also describes how satellite signals received at ATC terminals may be monitored to determine potential interference.

"This patent sets the parameters for uplink interference-driven handover," said Dr. Santanu Dutta, vice president systems engineering at MSV.

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