As for your question, you need to do two things, (1) assign the marks to your corporation (see below); and (2) file that assignment along with a Trademark Assignment Recordation Coversheet, at the USPTO website.
What about renewal? You must file a renewal and declaration of continued use between the ninth and tenth anniversary of registration and you should file a declaration of continied use and (optional but recommended) a statement of incontestability between the fifth and sixth years of registration. The failure to file the declaration of continued use will result in the loss of the registration.
Trademark Assignment