Copyright infringement can occur even if you do not sell the product. Simply using or distributing copyrighted material without permission from the copyright holder can still be considered infringement.
If it is recognizable as a copyright or trademark-protected character, you would need permission from the owner.
Copyright infringement, a civil offense.
You will be guilty of copyright infringement, which carries statutory fines ranging (in the US) from $750 to $30,000.
It is more likely to be a trademark violation than copyright infringement.
Song lyrics are copyrighted. Unless one gets legal permission, license agreement, then it is copyright infringement. You cannot sell those tees until you get permission from the copyright owner.
Yes; making a copy is one of the exclusive rights of the copyright holder, regardless of whether you sell the copy or not. Certain educational uses are exempt. It may be worth noting that while the law is broken whether you sell the information or not, the law may provide for higher penalties if you do sell it.
No it's called counterfeiting.
Possibly. If the logo is entirely incidental to the drawing you might be okay; if it is used as critique or commentary on Pepsi, it could be defensible under fair use. Most other uses would require a license.
If what you're offering to sell on eBay (or anywhere else) is an unlawfully made copy of copyrighted materials, then offering to sell it is an infringement of the copyright owner's exclusive right to sell copies to the public. The so-called "first sale doctrine" (e.g., in the USA, 17 USC 109) does not apply to illegal copies.
You can sell the old advertisement, but to make copies and sell the copies is very much copyright infringement. You could probably get aay with it for some time. But if you ever got caught the fines can be severe.
You probably couldn't because the books sell for money, and freely distributing them would be an infringement of the copyright (in other words, theft).
No they do not as it would be a copyright violation unless it was a licenced product