A lady on a social media is selling tennis shoes, which she has painted the likeness of an NFL team. Is this legal?

If by "likeness" you mean the team's names or logos, doing this commercially -- your promoting it -- could raise trademark infringement issues. An...

How do I file Section 337 complaint ? And how much it is going to cost me in legal fees ?

It is very complicated to do these correctly and it gets expensive. As a rule of thumb, I often say it will cost as much as seeking a preliminary...

Can I use a country top-level domain while the top level 'com' is registered by someone else?

It will depend on the domain name. You can register it and it will work as a domain name. But if the name is also a registered trademark you...

You should not adopt names that are so similar to another's mark as to cause a likelihood of confusion. If Pokemon is a mark and if you create an...

I got a trademark infringement demand letter siting only a custom letter as evidence is this enough?

It sounds like you may be misinterpreting the facts. The letter itself is probably not the evidence. But it probably discusses the evidence. What...

If you are publishing books and the other user is selling related products to the same or similar customers, you may be justified in sending a...

Can I use the shape of a Frappuccino (round cap, cylindrical body) in a for-profit comic?

The emphasis in your question on identification with Starbucks highlights an area of concern, as pointed out above. It might be noninfringing, or...

Could I monetize videos on YouTube while I am mentioning brand names and using its logos for educational purposes?

For there to be fair use of a trademark you must be making a non-trademark use and only take enough to bring the original to mind. Using logos...

Can I hashtag another companys name if it is trademarked?

There are too many variables to answer the question here. If the evidence shows summer water is descriptive of rose and your context is a...

Can I name an automotive repair facility Mercedes Elite Service.

It is not recommended that you name your business with a car company's trademark in your name. You may be able to use their mark in advertising to...