Successfully breeding and cultivating new plant varieties requires knowledge and skill. In addition, (large-scale) breeding requires significant investments in equipment such as greenhouses, growth chambers, laboratories and expert staff. For many plant species, it takes 10 to 15 years to develop a successful plant variety. Not all plant varieties are successful and even when the new varieties represent a clear improvement over existing varieties, a change in market sentiment may evaporate the opportunity for profit. Breeding new varieties is thus a risky business. This makes it necessary that the investment made in developing a new variety can be recouped. This investment can be recouped through a plant breeder's right for the new variety. In general, it can be said that plant breeders' rights should encourage breeders to produce more productive varieties of better quality. The benefit of developing improved varieties ultimately benefits (also) society as a whole.
At the same time, once a new variety is marketed, it can be easily reproduced. The original breeder is then deprived of the opportunity to derive a longer-term benefit from his newly developed variety and thus recoup his investment. Therefore, developing improved varieties is only profitable if there is a prospect of a "return on investment". It is therefore crucial that the variety can be protected with an effective plant breeders' right that encourages investment in the development of new plant varieties.