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C&W has taken Akamai to court over patent infringement claims before, and Akamai has sued C&W for infringing on two of its CDN-related patents.
However, the suit filed this week involves a patent C&W was granted earlier this month that covered various content-delivery algorithms and systems. The suit claims that Akamai's EdgeSuite CDN product and Akamaizer tool, which prepares content to be accessed by the CDN, infringes on C&W's new patent.
"We just want to protect our intellectual property," said Cable and Wireless lawyer Howard Lasky.
Akamai denied allegations of impropriety.
"We are confident that Akamai does not infringe the new patent," said Akamai president Paul Sagan.
"Given the timing of this new suit, it appears that Cable and Wireless decided to act simply to divert attention from the permanent injunction that is expected to be issued against them this summer - as a result of a jury finding that Cable and Wireless's Footprint content delivery service infringes Akamai patent rights," he added.
The new suit could cost Akamai dear. According to Lasky, C&W's patent infringement claim covers the entire scope of Akamai's business and could shut the company down if the court decides in C&W's favour.
Akamai has insisted that the matter is irrelevant to the company's operations. The company has yet to detail how it intends to fight the claims.