The United States Patent and Trademark Office is the federal agency, part of the US Department of Commerce, that examines and grants patents and registers trademarks. What people call the USPTO database is several public systems, split along the same line as the Office.
Patents are read in Patent Public Search, a workspace with Quick Search and Enhanced Search, a results grid and a document viewer that shows the full publication: bibliographic block, CPC table, abstract, description and claims. A query can be as narrow as one patent number or a field-coded search across all three collections.
Trademarks are found in Trademark Search, the cloud system that replaced TESS, which lists each filing with its wordmark, status, goods and services, class, serial number and owners, and the owner's entity type and home state or country. The case file itself lives in TSDR, Trademark Status and Document Retrieval: one page per serial number with mark information, goods and services, basis, current owner, prosecution history and the documents behind them.
Status has its own vocabulary. A live mark is registered or pending; a dead trademark is abandoned or cancelled, and Trademark Search defines a cancelled mark as one whose owner failed to submit the renewal documents. A dead mark keeps its full file, which is why abandoned names stay searchable for years.