would you advice to go ahead and try to market my designs and stuff....I mean could someone still steal my ideas with a patent-pending or whatever...thanks

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Depends if you have a temp patent number. Its a risky thing being an individual. Basically though if they approvd it for a patent pending number you should be as safe as you can be since the date is marked. catch is if someone else has a similiar patent and unless its some brand new technology probably already has a few competeing patents that are similiar enough for arguement.

I think you are incorrect. You might have applied for a patent but there is no single application for trademark and copyright. If you have an invention you can get a provisional patent that will protect you as long as the regular patent issues later.

If you have a filing receipt for the official filings for patent and trademark, then that is all you need for going ahead with your marketing. Note, however, that patent, copyright and trademark do not protect your ideas, even if they are granted. Patents protect your inventions (which may embody your ideas), copyrights protect your writings and other creative works (which may contain or describe your ideas) and trademarks protect the brand from being used unfairly by competitors or others. In no case do ANY of these protect your "ideas." That said, a "patent pending" is worthless for protection unless a patent is issued (typically after a long examination), copyright is automatic (whether or not you file anything) and (in the USA) trademark rights attach from the moment you become the first to use a particular brand on a particular set of goods or services "in commerce", meaning you're selling (or offering to sell) things, and registration is optional (although possibly quite valuable).