A patent is a set of exclusive rights granted by a government to an inventor or applicant for a limited amount of time (normally 20 years from the filing date). It is a legal document defining ownership of a particular area of new technology.
Designs are concerned with how things look. They protect, depending on the country in which they are Registered, for anywhere from (10+5) 15 years. They relate to any original feature(s) of a product such as its shape or configuration.
A Trademark is the means by which a business makes itself visible in the marketplace. A Trademark can be any distinctive (not solely descriptive) name or logo. The best Trademarks are instantly recognizable.
Copyright is a form of protection provided to the authors of “original works” and includes such things as literary, dramatic, musical, artistic, and certain other intellectual creations, both published and unpublished.