Transcript for Stay-at-Home Mom Takes on Target and Wins
Next tonight, we're back on the case, that American inventor, a mom, and her discovery at the store. Tonight, target and their decision. Here again, ABC's Neal Karlinsky. Reporter: Melissa lay is the stay at home mom who took on target and actually won. You work so hard on these designs. I screenprint until my body aches. Reporter: She runs a t-shirt business out of her garage and this is her best seller. So when friends started sending her pictures of a seemingly identical version sold at target, she was stunned. Shock. Because it was almost surreal, seeing it there in a store I shop at. Reporter: Didn't take us long to find it. Here it is at this target store. After ABC news and others covered the story, target took notice, overnight, backing down, saying they've been in contact with the vendor, and are in the process of removing the tee. Even so, today, we found the shirt still on sale at target. But watch what happened when we tried to buy it. Okay, so, we can't sell it. Reporter: True to their word, target wouldn't sell it. It doesn't always end like this. Dan brown, inventor of the bionic wrench told David sears copied his tool with a version made in China. It's a knockoff there's no question. Reporter: Sears says they didn't steal anything. They're litigating. As for Melissa, tonight, she says new orders are flying in. Neal Karlinsky, ABC news, Seattle.
This transcript has been automatically generated and may not be 100% accurate.