NTP is a holding company that attempts to collect licence fees for a set of patents covering a wireless email system.
RIM settled the case in March with a payment of $612.5m after facing an injunction that would have shut down the service in North America.
The US Patent and Trademark Office is in the process of re-examining two of the NTP patents and issued final rejection notices earlier this year.
NTP is demanding damages as well as an injunction that bars Palm selling and servicing the products that infringe on its patents.
But the case against Palm could be a much more difficult fight following a ruling by the US Supreme Court in May imposing restrictions on injunctions in patent cases.
The new rules effectively prevent patent holding companies from using injunctions to bully manufacturers into purchasing a licence for their technology.
Molybdenum ditelluride is a two-dimensional material that can be easily stacked into multiple layers to create a memory cell
New light-guiding nanoscale device can control and monitor a nanoparticle trapped in a laser beam with high sensitivity
Optical traps are scientific instruments in which a focused laser beam is used to exert an attractive or repulsive force on a microscopic object to hold it in place
Scientists estimate that the exoplanet has already lost up to 35 per cent of its mass over its lifetime
The observations were made using the Atacama Array in the Chilean desert