For illustration only. A Patent does not normally carry
the bonus terms attached to a Lucky 15,
so none are applied here. This calculator does not account for
Rule 4 deductions or
dead-heats. Non-runners are settled the standard way, at odds of 0 inside every
multiple. Always check your bookmaker's settlement. 18+ ·
BeGambleAware.org.
What a Patent covers
A Patent takes three selections and covers every possible
combination of them, seven bets in total:
| Bet type | How many | Winners needed |
|---|
| Singles | 3 | 1 |
| Doubles | 3 | 2 |
| Treble | 1 | 3 |
| Total | 7 | — |
The three singles are what separate a Patent from a Trixie: one winner
is enough to get a return. Whether that return beats the £7 outlay on a
£1 Patent depends on the price, a 7/1 winner gets you back to level on its own.
How to use the calculator
- Choose your odds format, fractional (like 5/1) or decimal
(like 6.0). You can also type "evens".
- Enter your stake per bet. This is the unit stake, so £1
here means a £7 Patent.
- Enter the odds for each of the three selections and set how
each one finished.
- Tick each-way if you placed it that way and choose your
place terms.
The breakdown table splits the singles, doubles and the treble so you can check
a settlement line by line.
Patent, Trixie, Lucky 15
| Bet | Selections | Bets | Singles? | Bonuses? |
|---|
| Trixie | 3 | 4 | No | No |
| Patent | 3 | 7 | Yes | Not usually |
| Yankee | 4 | 11 | No | No |
| Lucky 15 | 4 | 15 | Yes | Usually |
Think of the Patent as the three-selection version of the Lucky 15, minus the
bonuses. Add a fourth selection and the same shape becomes a Lucky 15; drop the
singles from either and you get a Trixie or a Yankee. For plain singles, doubles
and accumulators, use the bet calculator.
How non-runners are settled
A non-runner does not void a Patent. The standard rule settles the missing leg
at odds of 0, a price of 1.0, inside every bet it appears in,
so the bet pays out on the two remaining selections plus a void single that
returns its stake. Set a selection to "Non-runner" above and the calculator
applies that automatically.
What is a Patent bet?
A Patent is three selections combined into seven bets: three singles, three doubles and one treble. Because the singles are included, one winner is enough to get a return.
How is a Patent calculated?
Each of the seven bets is settled on its own. For every combination the odds of the selections in it are multiplied together, then multiplied by your unit stake. A bet containing a loser returns nothing, and the total is the sum of all seven.
How much does a Patent cost?
Seven times your unit stake, because it is seven bets. A £1 Patent costs £7 and a 50p Patent costs £3.50. Placed each-way it becomes 14 bets, so a £1 each-way Patent costs £14.
What is the difference between a Patent and a Trixie?
The same three selections. A Trixie is just the three doubles and the treble, four bets in total, with no singles. A Patent adds the three singles, so it costs seven units instead of four but returns something from a single winner.
Is a Patent the same as a Lucky 15?
It is the same idea with one fewer selection. A Lucky 15 is four selections in 15 bets and usually carries bonus terms; a Patent is three selections in seven bets and normally does not. If one leg of a Lucky 15 is a non-runner, it settles like a Patent on the three that ran.
Is this Patent calculator free?
Yes, completely free and private. It runs entirely in your browser and nothing you enter is stored or sent anywhere.