Patent or IP ruling
⚖️ LegalA court or patent office decides an intellectual-property dispute, or a key patent expires.
Typical size
3-20%
Timeframe
Immediate; patent cliffs play out over years
Evidence
0 logged events
Why it moves the price
Determines whether the company can keep excluding competitors from a profitable product. Losing exclusivity invites generics and collapses pricing.
What separates a good call from a naive one
Expiry dates are known years ahead and largely priced in, so the surprise comes from litigation that shortens or extends exclusivity. Quantify the revenue actually protected by the disputed patent — often a fraction of the headline product line.
Measured impact
Every logged event is measured against real closing prices: the move from the close before the event, compared with the S&P 500 over the same window.
Next day
Not measured yet
After 1 week
Not measured yet
After 1 month
Not measured yet
No measured verdict yet — 0 events logged. Three or more are needed before the data says anything useful.
The evidence (0)
Every row is a real event, measured against actual closing prices.
Measured from historical closing prices. Past reactions do not guarantee future ones. Not financial advice.