TSDR (Trademark Status and Document Retrieval) is the USPTO's free tool for looking up the current status, prosecution history, and official documents of a specific trademark application or registration, found at tsdr.uspto.gov. You look it up by serial number or registration number, not by searching for a word or phrase.

How current is the status shown in TSDR?

TSDR reflects the USPTO's internal case management system and updates as the USPTO processes each case. There can be a short lag between an action happening (for example, a filing being received) and it appearing in TSDR, so for time-sensitive deadlines, cross-check the actual filing date on the document itself, not just the summary status line.

Where do I find the opposition deadline in TSDR?

Look for the mark's publication date in the Prosecution History section. The 30-day opposition window (or the extended window if an extension was filed) runs from that publication date in the USPTO Official Gazette, not from the filing date or the TSDR page's own timestamp.

How to Read a TSDR Trademark Status Report: Every Section Explained

Short answer: TSDR (Trademark Status and Document Retrieval), at tsdr.uspto.gov, is the USPTO's free tool for checking a specific trademark application or registration by serial or registration number. A TSDR page has three main sections: a status summary (current status and key dates), a prosecution history (every event in the case, in order), and a documents tab (the actual filed paperwork, office actions, and correspondence). The single most important field for anyone watching for conflicts is the publication date, it starts the 30-day opposition clock.

Before you start: you need a number, not a search term

TSDR is a lookup tool, not a search tool. You need the application's serial number (assigned when it is filed) or its registration number (assigned once it registers) to pull up a case. If you do not have a number yet and are trying to find marks similar to yours, that is a different tool, the USPTO's Trademark Search system (formerly TESS), see our guide on what replaced TESS.

Section 1: the status summary

At the top of a TSDR page you will see the current status in plain language, for example "Live/Registered," "Live/Pending," or "Dead/Abandoned." Along with status, this section typically shows:

Filing date: when the application was originally submitted.
Registration date: if registered, when the mark was granted.
Mark: the wordmark or design as filed.
Owner: the current owner of record, which can change via assignment.
Goods and services: the classes and descriptions the mark is registered or applied for.

Section 2: the prosecution history

This is a chronological log of every event in the case, most recent first. Common entries you will see, in the order they typically happen for a live application:

New application filed: the starting point.
Assigned to examiner: a USPTO examining attorney takes the case.
Non-final office action issued: the examiner raises an objection (likelihood of confusion with an existing mark, descriptiveness, or a procedural issue). This is the point where your own new filing might get flagged if it conflicts with an existing registration.
Response to office action filed: the applicant addresses the objection.
Approved for publication: the examiner clears the mark to publish.
Published for opposition: this is the critical date. From here, third parties have 30 days to oppose.
Notice of allowance (for intent-to-use applications) or Registered (for use-based applications).

If you are monitoring a mark for conflicts, the event you care about most is "Published for opposition," because that date is what starts your 30-day window to act.

Section 3: documents

Every official filing, office action, response, and piece of correspondence in the case is available as a PDF here. This is where you go to actually read an office action's stated grounds for refusal, rather than relying on the one-line prosecution history description.

Where the 30-day opposition deadline actually comes from

This is the field people miss most often: the opposition window is not calculated from the filing date, the registration date, or when you happen to check TSDR. It runs from the publication date, the date the mark published in the USPTO's weekly Trademark Official Gazette. Find that date in the prosecution history under the "Published for opposition" entry. From that date, a third party has 30 days to file an opposition with the Trademark Trial and Appeal Board (TTAB), or to file for an extension of time to oppose, which can extend the window further.

A quick worked example

Say TSDR shows: filed March 2, published for opposition July 14, no opposition filed, registered September 9. The window you needed to act in, if you had a conflict to raise, was July 14 through roughly August 13 (30 days from publication), not anywhere near the March filing date or the September registration date. Missing that window because you were watching the wrong date is a common, avoidable mistake.

Legal disclaimer

This post is informational only and is not legal advice. TSDR data reflects the USPTO's records as of your lookup; always verify current status directly at tsdr.uspto.gov and consult a trademark attorney before taking action on an opposition, office action response, or any other filing deadline.