Getting a startup off the ground is just the beginning. Growing a business is the next step. In this Project Grow series, we talk to entrepreneurs at New York's Varick Street incubator as they meet the challenges.

If you're first to market with a successful product, it's not unusual for others to steal your idea. In this video intereview, hear entrepreneur Michael Aiello's story, plus tips from Pinterest investor Brian Cohen on how to handle imitators.

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