Using "wordpress" word in my products name

All other WordPress-related businesses or projects can use the WordPress name and logo to refer to and explain their services, but they cannot use them as part of a product, project, service, domain, or company name and they cannot use them in any way that suggests an affiliation with or endorsement by the WordPress Foundation or the WordPress open source project. For example, a consulting company can describe its business as “123 Web Services, offering WordPress consulting for small businesses,” but cannot call its business “The WordPress Consulting Company.” Similarly, a business related to WordPress themes can describe itself as “XYZ Themes, the world’s best WordPress themes,” but cannot call itself “The WordPress Theme Portal.”

http://wordpressfoundation.org/trademark-policy/