Motorola has filed a complaint against US Robotics for patent infringements just hours after a settlement with Rockwell International over similar claims.
The patent in question is for technologies essential to the International Telecommunications Union (ITU) V.34 modem standard of which Rockwell has agreed to license.
Several of the current proprietary 56K modem technologies include a return -- or upstream -- data path based on the V.34 standard. It is this technology which requires a licence said Motorola.
US Robotics said it will ?mount a vigorous defence of the lawsuit?, believing it has ?meritorious defences to Motorola claims?.
A US Robotics spokesperson said: ?It is regrettable and unnecessary that Motorola has chosen to resort to the courts rather than act in accordance with its often professed commitment to making its technology adapted for use in communications standards and available on a ?fair, reasonable and non-discriminatory basis?.?
The company said it had been in negotiations with Motorola for many months but it continued to ?demand more than reasonable compensation for its alleged intellectual property.
?Having made certain representations concerning the basis on which its intellectual property would be licensed if incorporated in the ITU standard, Motorola subsequently changed its demands after the standard was adopted and became accepted,? continued the spokesperson.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007