Cisco Systems, which has sued Apple Inc over the use of iPhone trademark, is now facing a similar challenge from a Canadian telecommunications company.
The Toronto-based Comwave Telecom Inc has sent Cisco Systems a letter of warning alleging that the networking giant is stepping on its use of the iPhone brand, CNETNews.Com reported on Saturday.
"We recently became aware of Comwave and we're investigating the issue thoroughly," said Cisco spokesman John Noh in response to the dispute with Comwave.
Earlier this month, Cisco had filed a lawsuit against Apple Inc over using the name "iPhone", a Cisco trademark since 2000.
Comwave, the second largest VoIP service in Canada, said it has been using the iPhone brand since 2004 to sell Internet phone service to its customers. "Our legal department has put Cisco on notice," said Yuval Barzakay, president of Toronto-based Comwave. "We will see how they react and then gauge our next action."
Comwave does not hold a registered trademark for iPhone, but has filed an application for one, reported CNETNews.