Limiting the number of products within the cart

Is it possible to have a coupon that is valid for several products but can only be used once for each product?

Example;
2 shovels total 12.00
1 hammer total 6.00
After 50% off coupon Total = 12.00
Currently the coupons take off the total in the cart which would be 9.00

Hi, I do not think so. We do not have quantity controls on percentage coupons, except for value definitions, but that would not solve this problem.