Patents are for inventions, processes and ideas. Patents must be applied for under strict rules and are not automatic
Copyrights are for written, printed or other recorded material and other intellectual property. Copyright is automatic in the USA. For example your original business card, artwork, documents, videos and music are copyrighted automatically.
Trade names must be registered and are protected at the state level.
Trademarks must be registered with teh feds and are usually only for products produced or sold. The mark shows the prodcut as having come from the particular producer. This has a percieved value, hence the use of counterfeits.
Servicemarks are similar to trademarks but are used by companies that do not produce or sell products. A service mark points to who did the work but because there is no physical product it is harder to counterfeit and less necessary to do so.
Servicemarks are much harder to defend simply because the system is designed to protect trademarks and merely handles service marks as an afterthought.
Service marks are often better protected under copyright law.
The key with any of these is that case law has established that you must vigorously and always defend your marks, especially trade marks. There are enough case law to suggest that if you fail to defend a trademark even once then you have given up your rights to it.
Copyright is a little easier to defend though it is also easier to infringe. Since copyright is automatic it makes it that much easier to stake your claim. But since copyright only protects the presentation and not the idea behind it you will find that it is also eaiser for others to get around the copyright protection.
This is why proteciton relies on heavy action and threat because most infringers are casual theives who don't realize what they have done and will back down at a nasty letter.
Real theives know that you have to go to the matt to defend it and will simply wear you down until they lose or you quit. Either way they profit during the fight.
The good news is that cease and desist letters are cheap to send.