Circa, the educational toy calendar, was also recently highly commended in the Rainbow Toy awards and prior to that, was awarded the best new children's product at the TopDrawer awards.
Men and women inventors were invited to enter their products and give a five minute presentation to a panel of judges.
Products were showcased prior to judging, allowing judges time to speak to each entrant about their products.
Holohan (pictured left recieving her award) said: "There were a variety of inventions that had entered the awards, from revolutionary irrigation systems to special springs that give crutches more shock absorbance when in use, so there was no telling what the outcome would be.
"When the awards were being announced for the Inventors category, we were told there were three runners up and I kept waiting to hear my name. When the final runner up's name was called out and it wasn't mine, my jaw dropped - I had won the category."
The judges praised Circa - the educational toy calendar - for its appeal to different markets, including family, gifts and education, as well as its simple design and overall educational value.
Circa will be available to the consumer market this November, in time for the Christmas market.