HTC Windows Phone 8X Similar to Nokia Lumia 820?

It is common to have a Windows Phone 8 operating system. But what happen if the design of one product with another product have similarities? This is a new problem that will be faced by HTC Windows Phone 8X. HTC's latest smartphone that will be marketed in November mentioned resemblance to the Nokia Lumia 820. Mainly in the front and four grooves on the phone side. Since there are similarities earlier, Nokia plans to file a lawsuit to the court to HTC WP 8 X banned or marketed. No further details about the steps to be taken in reaction to Nokia and HTC over rumors