An IP office examination typically covers the following.
Formal requirements: the examiner checks that the application is complete; correct owner details, required representation if applicable, proper class descriptions, and payment of fees.
Distinctiveness: the mark is assessed against the applicable standard for the jurisdiction. Generic or purely descriptive marks are refused. Marks that are sufficiently distinctive proceed.
Conflicts with earlier marks: in jurisdictions that examine relative grounds (such as the USPTO and IP Australia), the examiner searches for earlier marks that are confusingly similar. In jurisdictions that do not (such as the EUIPO and UKIPO), this is left to third parties during the opposition period.
If the examiner identifies any issue at any stage, an office action is issued. The applicant has a set window to respond before the application can be refused.