our business operations, and we may not prevail. A claim of intellectual property infringement could force us to enter into a costly or restrictive license agreement, which might not be available under acceptable terms or at all, or could subject us to significant damages or to an injunction against development and sale of certain of our products or services. Our intellectual property portfolio may not be useful in asserting a counterclaim, or providing commercial leverage for negotiating a license, in response to a claim of intellectual property infringement. In certain of our businesses we rely on third-party intellectual property licenses and we cannot ensure that these licenses will be available to us in the future on favorable terms or at all. Although our policy is to obtain licenses or other rights where necessary, we cannot provide assurance that we have obtained all required licenses or rights. Third parties may misappropriate or infringe on our intellectual property and we may suffer competitive injury or expend significant resources enforcing our rights. Our success increasingly depends on our proprietary technology and its ability to differentiate us from our competitors. We rely on various intellectual property rights, including patents, copyrights, database rights, trademarks and trade secrets, as well as contract restrictions, confidentiality provisions and licensing arrangements, to establish and protect our proprietary rights. The extent to which such rights can be protected varies in different jurisdictions. If we do not protect and enforce our intellectual property rights successfully, our competitive position may suffer which could harm our operating results. Our pending patent and trademark applications may not be allowed or competitors may challenge the validity or scope of our intellectual property rights. In addition, our patents, copyrights, trademarks and other intellectual property rights may not provide us a significant competitive advantage. We may need to devote significant resources to monitoring our intellectual property rights and we may or may not be able to detect misappropriation or infringement by third parties. Our competitive position may be harmed if we cannot detect misappropriation or infringement and enforce our intellectual property rights quickly or at all. In some circumstances, enforcement may not be available to us because a third party has a dominant intellectual property position or for other business reasons. In addition, competitors might avoid infringement by designing around our intellectual property rights or by developing non-infringing competing technologies. Intellectual property rights and our ability to enforce them may be unavailable or limited in some countries, which could make it easier for competitors to capture market share and could result in lost revenue. Our retirement and post-retirement pension plans are subject to financial market risks that could adversely affect our future results of operations and cash flows. We have significant retirement and post-retirement pension plan assets and obligations. The performance of the financial markets and interest rates impact our plan expenses and funding obligations. Significant decreases in interest rates, decreases in the fair value of plan assets and investment losses on plan assets will increase our funding obligations, and adversely impact our results of operations and cash flows. Our executive offices are located at 1550 Peachtree Street, N.W., Atlanta, Georgia. Our other properties are geographically distributed to meet sales and operating requirements worldwide. We consider these properties to be both suitable and adequate to meet our current operating requirements. We ordinarily lease office space for conducting our business and are obligated under approximately 60 leases and other rental arrangements for our field locations. We owned 5 office buildings at December 31, 2020, including our executive offices, one campus which houses our Alpharetta, Georgia technology center, a building utilized by our Workforce Solutions operations located in St. Louis, Missouri, as well as two buildings utilized by our Latin America operations. For additional information regarding our obligations under leases, see Note 6 of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K. We believe that suitable additional space will be available to accommodate our future needs. 26 ITEM 2. PROPERTIES ITEM 1B. UNRESOLVED STAFF COMMENTS None. Financial Market Risks