Is it illegal to sell something like sony headset, which is replica?

Is is illegal to deceive? What do you think? This is not a legal question, it is an ethics question that you should be able to answer...

In writing a book, do I need to get permission to quote university research?

The type of quotations you intend to include in your book are contemplated under the fair use doctrine of copyright material and thus they do not...

Does it matter if on the teas plus online form I used a dash and all caps on some words and nothers?

I read you said you hired an attorney, then follow her/his advise. Good luck

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Related goods or not? [trademarks]

You hired a lawyer, Congratulations, you did the right thing, then follow his/her advise.

A company in Australia infringed upon my copyright, but I didn't register the copyright in the US

No , you do not have to travel to Australia, but you will need to hire a Barrister there to litigate the infringement. I suggest you register your...

TRADEMARK GOODIES

If they are available and there are no conflicts the marks may be allowed, although most likely in the supplemental register. Contact a TM attorney.

If I apply for a trademark under one IC class now, can I sucessfully register under a second class later?

in principle if there were no conflict with existing marks, you should have not problem registering it in a separate class. Having said that, the...

Hi can the following two trademarks co-exist?

NO

I recently applied for the following trademark below, what do you guys think?

Why would you use an identical existing mark? The answer is almost always the same, you want to benefit from consumer awareness of the other mark....

I have a patent that will be issued in several months

Your question is not about a legal issue but a commercial one. The best approach is to check in Thomas Register for the manufacturers of like...