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Clock · 05

Opposition & cancellation clocks

When a window is open, the calendar is the first job.

First job Identify the gazette date and the live clock before writing a long brand strategy.

Treat the opposition window as the first fact

This is an IP calendar, not a customs duty clock and not a family-safety strip.

Open the opposition guide

Start here

Key considerations

  1. Is this opposition, invalidation, or non-use cancellation?
  2. What is the gazette or start date?
  3. Who owns the watched mark?

Decision map

Keep the question bounded.

  1. Name the clockThree different remedies, three calendars.
  2. Name the dateGazette or non-use period as you understand it.
  3. File with counselThis hub does not file at CNIPA.

Timeline

Sequence and clocks that change the next action.

  1. Gazette / startThe date that opened the window.
  2. This windowWhat must be filed before it closes.
  3. RevisionAny short follow-on period after a first filing.

Curated resources

Open the asset that matches this job.

Helpful to prepare

Facts that make the next conversation clearer.

These items are orientation aids, not a legal requirement list.

  1. Remedy type (opposition / invalidation / non-use)
  2. Gazette or period date as currently understood
  3. Marks in conflict at a high level

Local context

Add the city when the enforcement forum changes.

AIC/SAMR and court practice can differ after the national IP route is identified.

Open city and province guides

Counsel hand-off

Need IP counsel?

This hub organises filing, secrets and enforcement routes. It does not register rights, stop a squatter or bind CNIPA on your facts.

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Directory and legal information only — not legal advice. Confirm current rules with qualified counsel.

Editorial policy · Last reviewed August 2026 · Intellectual Property