Should I copyright my photographs? Can I sell prints of photographs but still retain ownership?

Yes, but you mean "copyright registration", not copyright. You already have a copyright.That happens automatically under 17 USC 102. Registration...

Yes, the suit is based on unfair competition and does not require a trademark or service mark registration. Trademark rights are acquired in a logo...

What do I need to do to stop a trademark application of someone who went behind and applied to trademark my corporations name

You need to hire a trademark litigator to review this in specific detail in confidence. There are many options that can be pursued, and which one...

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Brand name I'm planning to use is similar to existing brand but they aren't trademarked. Can they sue me after I've trademarked?

The other brand may not be registered, but is protected by common law trademark if in use in commerce and if distinctive. Normally a trademark...

The Statute of Limitations for copyright infringement actions is three years from accrual of the action. So, it sounds like that may pose a...

Is it legal to target members of a professional organization with advertising and "members only" deals w/out the orgs knowledge?

Yes, it is legal provided it is done without false implication of affiliation, sponsorship, control or any connection with the professional...

Asked and answered, over a hundred times. See http://www.avvo.com/legal-guides/ugc/can-i-use-famous-quotes-on-my-products-without-permission...

Am I good to trademark my domain name, or is this trademark dilution or trademark infringement?

Your situation is not particularly unique. Lots of domain names have zero activity. Others are incredibly active and commercial. Amazon.com and...

For private non-commercial use? Yes that is legal. http://www.law.cornell.edu/uscode/text/17/1008 Now if you do that commercially that will be...

Are software App ideas patentable or just the coding?

This depends on what you mean by "idea". Just the abstract concept of doing a known thing except do it by computer is not patentable, first the...