INTANGIBLE ASSETS, NET

6 Months Ended

Jun. 30, 2011

INTANGIBLE ASSETS, NET

INTANGIBLE ASSETS, NET

10.  INTANGIBLE ASSETS, NET

Intangible assets consisted of the following:

		June 30, 2011						December 31, 2010
	Estimated	Gross				Net		Gross				Net
	Useful	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Lives	Amount		Amortization		Amount		Amount		Amortization		Amount
Product Rights & Technology	5 - 20 years	$	1,118,944	$	588,428	$	530,516	$	1,161,807	$	540,425	$	621,382
IPR&D	Indefinite	973,756		—		973,756		374,376		—		374,376
Trademarks	10 - 20 years	276,310		57,708		218,602		261,566		47,315		214,251
Other agreements	1 - 2 years	4,801		3,429		1,372		4,162		1,784		2,378
		$	2,373,811	$	649,565	$	1,724,246	$	1,801,911	$	589,524	$	1,212,387

Intangible assets are amortized over their estimated useful economic life using the straight line method. Amortization expense was $26.9 million and $32.2 million for the three months ended June 30, 2011 and 2010, respectively and $56.0 million and $58.0 million for the six months ended June 30, 2011 and 2010, respectively.