

(USPTO)is the federal office that reviews and grants (or declines) patents and registration of trademarks and service marks.
If a nonimmigrant has been informed that they are in “unlawful presence” by the USCIS and they remain in the United States for more than 180 days but then depart voluntarily, they must remain outside the U.S. for three years before being eligible to immigrate again. A person who remains in "unlawful presence" for more than twelve months must remain outside the U.S. for ten years. The term "unlawful presence" is not synonymous with "in violation of status" or “out of status”.
"U.S. Citizenship and Immigration Services" – formerly known as I.N.S. - - the agency within the Department of Homeland Security that judges petitions and applications for immigration benefits.
“U.S. Immigration and Customs Enforcement” - the agency responsible for investigating and prosecuting violations of U.S. immigration law.