Delaware LLC name search: avoiding trademark conflicts before you file

The two checks are independent

Delaware Division of Corporations checks distinguishability against existing Delaware-registered entities. The USPTO trademark database checks for conflicts with federal trademark registrations and pending applications. These are separate registries with separate rules.

A name like 'Acme Software LLC' may be available in Delaware (no other Delaware entity has it) but still infringe a federal trademark held by an Acme Software company in California (filed under federal trademark Class 9 for software). Delaware's check does not catch USPTO conflicts.

How to run both checks

Delaware: icis.corp.delaware.gov/EntitySearch. Search for the proposed name without the LLC ending. A 'no records found' result means available.

USPTO: tmsearch.uspto.gov (TESS database). Search for the exact name and minor variations in the relevant industry class. Common-law trademark conflicts (used but not registered) require Google search and industry-specific marketplace checks.

What to do when a conflict surfaces

For Delaware-only conflicts, modify the name with a meaningful business descriptor and re-check.

For USPTO conflicts in the same industry class, pick a different name. Trying to coexist with an existing federal trademark is expensive litigation territory.

For USPTO conflicts in a different industry class, the analysis is more nuanced. A Class 25 (apparel) trademark may not conflict with a Class 9 (software) registration of the same name. Consult a trademark attorney for high-stakes brand names.