What are the Differences between Principal Registration, Supplemental Registration and Common Law?

Rights and Protection. A Principal Registration give the most rights, which may be especially important if you dealing with a good or goods that may be subject to counterfeiting. Only trademarks on the Principal Register may be recorded with U.S. Customs for protection.

A registration on the Supplemental Register may be viewed as a weak mark and may be subject to less protection under the law. But a Supplemental Registration may be better than no registration at all, even a Supplemental Registration can be used by a trademark examiner to refuse later-filed applications with a likelihood of confusion.

Trying to stop someone from using your unregistered mark can be very difficult, unregistered marks are very difficult to enforce. A registered mark can be used against conflicting marks over and over by trademark examiners to stop the registration of new marks with a likelihood of confusion. Opposing or Cancelling or suing users with conflicting marks one by one is very expensive. A lot of presumptive rights come with a Principal Registration.


How do you know if a mark is registered on the Supplemental Register? How do I search the Supplemental Register? On the Trademark Electronic Search System (TESS) at http://tess2.uspto.gov,  a user can search on the Structured or Free Form search to find marks on the Supplemental Register. The field Register on the Structured search or [RG] on the Free Form Search identifies this field. This field identifies the mark as being either on the Principal Register (PRINCIPAL), the Principal Register with a Section 2(f) claim of acquired distinctiveness in part or in whole (PRINCIPAL-2(F)-IN PART, PRINCIPAL-2(F), or the Supplemental Register (SUPPLEMENTAL).

For a Free Form search or Structured search: The search PRINCIPAL[RG] retrieves only occurrences of PRINCIPAL. The search PRINCIPAL-2[RG] AND PART[RG] retrieves only occurrences of PRINCIPAL-2(F)-IN PART. The search PRINCIPAL-2[RG] NOT PART[RG] retrieves only occurrences of PRINCIPAL-2(F). The search SUPPLEMENTAL[RG] retrieves only occurrences of (d) SUPPLEMENTAL. This field applies only to Registered marks.

Note: Trademarks that are registered under Section 2(f) (or -2(F)) are marks that claim acquired distinctiveness in order to register on the Principal Register. See merelydescriptive.com for more information.



Comparison of Principal Register, Supplemental Register, and Common Law Trademark Rights

(Advantages of Federal Registration)


Trademark Rights

Principal Register

Supplemental Register

Common Law

Bring infringement suit in federal court based on the federal registration

YES

YES

NO

The owner of a USPTO registration is entitled to rely upon the USPTO's fulfillment of its statutory duty to refuse registration to marks confusingly similar to a prior registrant's mark

 (USA Warriors Ice Hockey Program, Inc., 122 U.S.P.Q.2d 1790, (TTAB 2017))

YES

YES

NO

Mark is easy to find for search reports

YES

YES

NO

Owner can use ® to symbolize federal registration

YES

YES

NO

Incontestability of mark after 5 years

YES

NO

NO

Statutory presumption of validity

YES

NO

NO

Statutory presumption of ownership

YES

NO

NO

Statutory presumption of distinctiveness or inherently distinctive

YES

NO

NO

Statutory presumption of exclusive right to use the mark in commerce

YES

NO

NO

Can be recorded with US Customs and Border Protection (CBP) to prevent importation of infringing goods

YES

NO

NO

Ability to bring federal criminal charges against traffickers in counterfeits

YES

NO

NO

Use of the U.S. registration as a basis to obtain registration in foreign countries

YES

NO

NO



Call us at (651) 500-7590 for a Strong Trademark. A Strong Trademark is Not Just a tool to increase sales to customers–it is also easier to sell to your investors & licensees.


Not Just Patents ® is a registered trademark of Not Just Patents LLC with a USPTO Federal Trademark Registration (R/N 3556868-service mark for Legal Services).


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TMk® Email [email protected] best or call 1-651-500-7590   (Calls are screened for ‘trademark’ and other applicable reasons for the call) for U.S. Licensed Attorney for Trademark Searches and Applications; File or Defend an Opposition or Cancellation; File or Defend an Expungement or Reexamination of a trademark registration; Trademark Refusal; Brand Positioning

For more information from Not Just Patents, see our other pages and sites:      

USPTO TESS

TEAS Plus  Where to trademark search?

Trademark e Search  Strong Trademark  

Common Law Trademarks   Trademark A-Z

Grounds for Refusal  ITU unit action

Tm1a.com: Why 1(a)? Tm1b.com: Why 1(b) trademark?

Trademark Disclaimers Trademark/Patent Assignment

Oppose or Cancel? Examples of Disclaimers  Cease and Desist

Patent, Trademark & Copyright Inventory Forms

Preparing to file a trademark application

Trademark Search Method TEAS Standard application    

How to Trademark Search Trademark opposed?

Are You a Content Provider-How to Pick an ID  Specimens: webpages

Self-authenticating specimen?  How many days to register?

Trademark ID manual

Using Slogans (Taglines), Model Numbers as Trademarks

Which format? When Should I  Use Standard Characters?

Change Trademark or Patent Ownership    

 Opposition Proceeding    

Oppositions-The Underdog  TTAB Discovery Conference Checklist

How To Answer A Trademark Cease and Desist Letter

Trademark Register FAQ  Definition: Clearance Search

teas plus vs teas standard  approved for pub - principal register

Hashtag Searching   Amend to Supplemental Register?


Trademark Search Hack-Use the same method as USPTO   

Experience appearing before the Board (TTAB)

Trademark Specimen  Statement of Use (SOU)

How To Show Acquired Distinctiveness Under 2(f)

Trademark  Refusal  Opposition Period

Which TEAS application is less likely to be refused?

Examples of Composite or Unitary Marks  

TEAS Plus refusal rate  tesssearch  Brand Positioning Help

What Does ‘Use in Commerce’ Mean?    

Grounds for Opposition & Cancellation

Notice of Opposition trademark sample

What is a trademark specimen?     Trademark Searching

TTAB/TBMP Discovery Conferences & Stipulations

TBMP 309 Grounds Opposition/Canc.  

 Examples and General Rules for Likelihood of Confusion

   DuPont Factors

What are Dead or Abandoned Trademarks?

Can I Use An Abandoned Trademark?  Trademark Timeline

3D Marks Trade Dress TTAB Extension of Time  

Can I Abandon a Trademark During An Opposition?

Differences between TEAS Plus and TEAS Standard  

Extension of Time to Oppose

 tess search  Examples of Unusual Trademarks

Trademark Opposition Timeline  Extension of time to answer  

What Does Published for Opposition Mean?

What to Discuss in the Discovery Conference

Overcoming Merely Descriptive Refusal  TmkApp Checklist

Likelihood of Confusion 2d  TMK.law–Knowing the law matters

Acquired Distinctiveness Examples  2(f) or 2(f) in part

Definition: Likelihood of confusion

Merely Descriptive Trademarks  Merely Descriptive Refusals

Definition of Related goods and services for trademarks

ID of Goods and Services see also Headings (list) of International Trademark Classes How to search ID Manual

How to TESS trademark search-Trademark Electronic Search System

Extension of Time to Oppose

Geographically Descriptive or Deceptive

Change of Address with the TTAB using ESTTA

Likelihood of confusion-Circuit Court tests  Trademark Glossary

Pseudo Marks    How to Reply to Cease and Desist Letter

Why Hire A Private Trademark Attorney?

 Merely Descriptive Refusal   Overcome Likelihood Confusion

Common Law Rights for Domain Names

Steps in a Trademark Opposition Process   

Published for Opposition  What is Discoverable in a TTAB Proceeding Affirmative Defenses  Trademark Registration Cancellation

What is the Difference between Principal & Supplemental Register?   How many days until my trademark registers?

What is a Family of Marks? What If Someone Files An Opposition Against My Trademark? Statutory Cause of Action (aka Standing)

Tips for responding to tm Refusal  

DIY Overcoming Merely Descriptive Refusals

TESS Trademark Trademark Registration Answers TESS database  

Trademark Searching Using TESS  Trademark Search Tips

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