Yahoo 2005 Annual Report Download - page 21

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15
development and engineering. We have developed internally, acquired or licensed the products and
services we offer. Product development expenses totaled approximately $207 million, $369 million, and
$547 million for 2003, 2004, and 2005, respectively.
INTELLECTUAL PROPERTY
We create, own and maintain a wide array of intellectual property assets that we believe are among our
most valuable assets. Our intellectual property assets include patents and patent applications related to
our innovations, products and services; trademarks related to our brands, products and services; copyrights
in software and creative content; trade secrets; and other intellectual property rights and licenses of various
kinds. We seek to protect our intellectual property assets through patent, copyright, trade secret,
trademark and other laws of the United States and other countries of the world, and through contractual
provisions. We enter into confidentiality and invention assignment agreements with our employees and
contractors, and non-disclosure agreements with third parties with whom we conduct business in order to
limit access to, and disclosure of, our proprietary information. We consider the Yahoo! trademark and our
many related trademarks to be among our most valuable assets and we have registered these trademarks in
the United States and other countries throughout the world and aggressively seek to protect them. We
have licensed in the past, and expect that we may license in the future, certain of our proprietary rights,
such as trademark, patent, copyright and trade secret rights to third parties. Additional information
regarding certain risks related to our intellectual property is included in Part I, Item 1A “Risk Factors” of
this Annual Report on Form 10-K.
EMPLOYEES
As of December 31, 2005, we had approximately 9,800 full-time employees. Our future success is
substantially dependent on the performance of our senior management and key technical personnel, and
our continuing ability to attract and retain highly qualified technical and managerial personnel. Additional
information regarding certain risks related to our employees is included in Part I, Item 1A “Risk Factors”
of this Annual Report on Form 10-K.
AVAILABLE INFORMATION
Our website is located at http://www.yahoo.com. Our investor relations website is located at
http://yhoo.client.shareholder.com/. We make available free of charge on our investor relations website
under “SEC Filings” our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current
Reports on Form 8-K and any amendments to those reports as soon as reasonably practicable after we
electronically file or furnish such materials to the U.S. Securities and Exchange Commission (“SEC”).
Further, a copy of this annual report on Form 10-K is located at the SEC’s Public Reference Room at
450 Fifth Street, NW, Washington, D.C. 20549. Information on the operation of the Public Reference
Room can be obtained by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site that
contains reports, proxy and information statements and other information regarding our filings at
http://www.sec.gov.