A Patent is three picks covered every way you can: three singles, three doubles and a treble. Seven bets. The Patent bet calculator above shows you what comes back from one winner, two or all three.
Same picks as our Trixie example: 2/1, 5/2 and 3/1, £1 a line, £7 total. All three win: £89. Two win (2/1 and 3/1): £19, so £12 profit. One wins, the 3/1: £4 back. You lose £3, but you don’t lose everything.
What the Patent bet calculator includes
- 3 singles
- 3 doubles
- 1 treble
The singles are the whole point. A Patent at the prices above pays back more than half the stake with a single 3/1 winner, and goes into profit with two winners at almost any price over evens.
Results work like a betting slip. Won, placed (matters only each way), lost or non-runner. A non-runner is settled as if it were a winner at odds of 1.0: the single is refunded and the doubles it was in become singles.
Patent or Trixie?
A Patent costs 75% more than a Trixie at the same stake (£7 against £4). If you’re confident in all three, a Trixie gets you nearly the same top return for less. If one of your picks is a bit of a punt, the Patent is the safer way in.
Some bookies treat the Patent like a “Lucky 7” and add a one-winner bonus. If yours does, the calculator’s single-winner number is the one to multiply.
The formula
Patent return = stake × ((1 + a)(1 + b)(1 + c) − 1)
Decimal odds for each winner, 0 for a loser, 1 for a non-runner. For 3.0, 3.5 and 4.0 that’s 4 × 4.5 × 5 − 1 = 89.
Got a fourth pick? That’s a Lucky 15.
Decide your stake before you look at the odds. BeGambleAware.org is free and confidential if it stops being fun.