The 90-day problem: why most launch plans are out of date before they ship

A brand plan for a pharma launch is typically written eighteen months out, signed off at twelve, and executed from month zero. The strategy is finalised in a world that no longer exists by the time the first rep walks into a clinic.

This isn't a failure of planning. It's a failure of planning cadence. The assumption is that you can plan once, well, and then execute. The reality is that the market is moving on a ninety-day cycle and the brand plan is moving on an annual one.

What changes inside ninety days

Competitor data readouts. Guideline updates. A payer's tiering decision. An unrelated drug withdrawal that reshapes an adjacent category. A KOL article that shifts the clinical narrative. Any one of these can invalidate a positioning assumption that the brand plan is still organised around.

Most brand teams notice. Most brand plans don't update. The team works harder to make the old strategy fit the new facts.

What a 90-day cadence actually looks like

It doesn't mean rewriting the brand plan every quarter. It means running a short, structured review at quarter end that asks three questions:

What have we learned about the market that we didn't know when we wrote this plan?

Does that new knowledge change any of our strategic assumptions? Specifically which ones?

If it does, what is the cheapest test we can run in the next ninety days to confirm or kill the new assumption?

The output is not a new plan. It's a list of two or three live questions the team is committing to answer. Small experiments, not big pivots.

Why most teams don't do this

The honest answer is governance. An annual plan is easy to approve. A quarterly set of hypotheses is harder to bless up the chain. The structure rewards the impression of certainty over the practice of learning.

The way around this isn't to abandon the annual plan. It's to run the annual plan as a north-star document and a quarterly rhythm of experiments underneath it. The annual plan sets direction; the ninety-day cycle is where the brand actually learns.

The test

Look at your current brand plan. What is the last assumption in it that was stress-tested by a real piece of market evidence, not by an agency workshop? If the answer is "at the market research stage eighteen months ago", the plan is older than it looks.

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