Question
I am exploring application of lean startup principles to a niche industry that has nothing to do with entrepreneurship. In other words, the principles wouldn't be applied to creating a start up, but it would treat an individual as the product/start up and invite individuals to identify their own value proposition for employers or in situations where they need to demonstrate value. Is it okay to call a product developed for this purpose "lean" as in "lean career development"?
Answer
Ries owns 'Lean Startup' trademark. I doubt 'lean' by itself is trademark-able, and isn't claimed by Eric. Someone else may claim 'lean career development,' so might be worth a trademark search.