US patent grants the inventor four basic rights on the invention:
1.) make
2.) use
3.) sell
4.) offer to sell
The patent could be for up to 20 years depending on the type of US patent applied for.
US patent has four distinct general types:
(1) Utility patents, usually referred to as “patents” without any further qualification
(2) Design patents whichcover the ornamental appearance of various products
(3) Plant patents which cover asexually reproduced varieties of plants, e.g. hybrid roses, fruit trees bearing new types of fruit, etc.
(4) Semiconductor chip masks which are not called patents but are handled by the Patent and Trademark Office.
Search patent is one of the most basic thing an inventor has to do when applying for patent. Search patent enables the inventor to know if his invention is already patented or not. Search patent can determine if the proposed invention merits the patentability as set by the statutory conditions.
The most basic place to do search patent is accessing database of the US Patent and Trademark Office worldwide. There are designated patent libraries which one can use too. During search patent, an inventor should compare a collection of prior patents, printed publications, journals or other technical articles with the invention. These references serve as basis for determining the patentability of an invention. But before doing so, he or she must examine each of these “references” in order to ensure that they are valid.
