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Intangible Assets and Goodwill
12 Months Ended
Dec. 28, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS AND GOODWILL
Intangible Assets and Goodwill
At the end of 2014 and 2013, the gross and net amounts of intangible assets were:
(Dollars in Millions)
 
2014
 
2013
Intangible assets with definite lives:
 
 

 
 

Patents and trademarks — gross
 
$
9,074

 
9,164

Less accumulated amortization
 
4,700

 
4,146

Patents and trademarks — net
 
$
4,374

 
5,018

Customer relationships and other intangibles — gross
 
$
17,970

 
19,027

Less accumulated amortization
 
5,227

 
4,872

Customer relationships and other intangibles — net
 
$
12,743

 
14,155

Intangible assets with indefinite lives:
 
 

 
 

Trademarks
 
$
7,263

 
7,619

Purchased in-process research and development
 
2,842

 
1,155

Total intangible assets with indefinite lives
 
$
10,105

 
8,774

Total intangible assets — net
 
$
27,222

 
27,947



Goodwill as of December 28, 2014 and December 29, 2013, as allocated by segment of business, was as follows:
(Dollars in Millions)
 
Consumer
 
Pharmaceutical
 
Med Devices
 
Total
Goodwill at December 30, 2012
 
$
8,519

 
1,792

 
12,113

 
22,424

Goodwill, related to acquisitions
 
83

 
246

 
9

 
338

Goodwill, related to divestitures
 
(71
)
 

 

 
(71
)
Currency translation/other
 

 
30

 
77

 
107

Goodwill at December 29, 2013
 
$
8,531

 
2,068

 
12,199

 
22,798

Goodwill, related to acquisitions
 
13

 
665

 

 
678

Goodwill, related to divestitures
 
(138
)
 

 
(603
)
 
(741
)
Currency translation/other
 
(731
)
 
(107
)
 
(65
)
 
(903
)
Goodwill at December 28, 2014
 
$
7,675

 
2,626

 
11,531

 
21,832



The weighted average amortization periods for patents and trademarks and customer relationships and other intangible assets are 17 years and 24 years, respectively. The amortization expense of amortizable assets included in cost of products sold was $1,398 million, $1,363 million and $1,146 million before tax, for the fiscal years ended December 28, 2014, December 29, 2013 and December 30, 2012, respectively. The estimated amortization expense for the five succeeding years approximates $1,300 million before tax, per year.

See Note 20 to the Consolidated Financial Statements for additional details related to acquisitions and divestitures.