Motorola, the US largest phone maker, has filed a lawsuit against Michael Fenger, a former executive who left the company in March to join Apple.

According to Bloomberg News, which discovered the lawsuit filed in an Illinois circuit court in Cook County, Motorola claims that due to its position, Michael Fenger had access to Motorola's business practices and strategies.

When he resigned from Motorola, Michael Fenger was a vice president for the company's mobile- device business in EMEA. He later joined Apple as the vice president for global iPhone sales.

“He was privy to the pricing, margins, customer initiatives, allocation of resources, product development, multiyear product, business and talent planning and strategies being used by Motorola,'' the company noted in the complaint.

Motorola explained that Michael Fenger received stock options to refrain from working for a competitor for two years after leaving Motorola.

Now the company seeks to bar him from working for Apple and demands $1 million back from stock options awards.

Last week, Apple launched its 3G iPhone simultaneously in 21 countries, including the United States, Australia, Austria, Canada, Denmark, Germany, Hong Kong, Ireland, Italy, Japan, Mexico, Netherlands, and the UK with several extremely appealing offers and also a recently released App Store, which provides many new, fun and useful applications for the gadget’s users.

The company is on track to reach its 10 million units milestone until the end of this year.