Note 6. Acquisitions

On May 22, 2012, we completed our acquisition of Motorola, a provider of innovative technologies, products and services that enable a range of mobile and wireline digital communication, information and entertainment experiences. The acquisition is expected to protect and advance our Android ecosystem and enhance competition in mobile computing. Under the transaction, we acquired all outstanding common shares of Motorola for $40 per share and all vested Motorola stock options and restricted stock units, for a total purchase price of approximately $12.4 billion in cash. In addition, we assumed $401 million of unvested Motorola stock options and restricted stock units, which will be recorded as stock-based compensation expense over the remaining service periods. Transaction costs were approximately $50 million, which were recorded as general and administrative expense as incurred.

The fair value of assets acquired and liabilities assumed was based upon a preliminary valuation and our estimates and assumptions are subject to change within the measurement period. The primary areas of the purchase price that are not yet finalized are related to certain legal matters, income taxes, and residual goodwill. Of the $12.4 billion total purchase price, $2.9 billion was cash acquired, $5.5 billion was attributed to patents and developed technology, $2.5 billion to goodwill, $0.7 billion to customer relationships, and $0.8 billion to other net assets acquired.

The goodwill of $2.5 billion is primarily attributed to the synergies expected to arise after the acquisition. Goodwill is not expected to be deductible for tax purposes.

Supplemental information on an unaudited pro forma basis, as if the Motorola acquisition had been consummated on January 1, 2011, is presented as follows (in millions, except per share amounts):


	Year Ended December 31,
	2011		2012
Revenues⁽¹⁾	$	47,294	$	53,656
Net income		8,792		10,583
Net income per share of Class A and Class B common stock—diluted		26.83		31.82

⁽¹⁾	Excludes Home.

These pro forma results are based on estimates and assumptions, which we believe are reasonable. They are not necessarily indicative of our consolidated results of operations in future periods or the results that actually would have been realized had we been a combined company during the periods presented. The pro forma results include adjustments primarily related to amortization of acquired intangible assets, severance and benefit arrangements in connection with the acquisition, and stock-based compensation expenses for assumed unvested stock options and restricted stock units.

During the year ended December 31, 2012, we completed 52 other acquisitions and purchases of intangible assets for a total cash consideration of approximately $1,171 million, of which $733 million was attributed to goodwill, $462 million to acquired intangible assets, and $24 million to net liabilities assumed. These acquisitions generally enhance the breadth and depth of our expertise in engineering and other functional areas, our technologies, and our product offerings. The amount of goodwill expected to be deductible for tax purposes is approximately $29 million.

Pro forma results of operations for these acquisitions have not been presented because they are not material to the consolidated results of operations, either individually or in the aggregate.

For all acquisitions completed during the year ended December 31, 2012, patents and developed technology have a weighted-average useful life of 8.9 years, customer relationships have a weighted-average useful life of 7.4 years and trade names and other have a weighted-average useful life of 9.0 years.