In most jurisdictions, renewal can be filed in the six months preceding the expiry date. Some jurisdictions, including the US, Australia, and New Zealand, allow early filing up to 12 months before expiry.
If the standard deadline is missed, most jurisdictions provide a six-month grace period after expiry during which renewal can still be filed, typically with an additional surcharge. After the grace period closes, the trademark lapses and cannot be renewed; a new application would be required.
Filing as early as the renewal window allows is advisable. Late renewals during the grace period carry additional fees and, in some jurisdictions (such as the UK), can only be submitted by post rather than online.
Trama handles trademark renewals; get a renewal reminder before your deadline.