Are there different types of patent applications?

There are four types: (i) Utility Patent applications, (ii) Design Patent applications, (iii) Plant Patent applications, and (iv) Provisional Patent applications. The most common is the Utility Patent application, which covers functional man-made items, such as mechanical, electrical, chemical, pharmaceutical, software and genetic inventions. Design Patents deal with ornamental designs of functional items. For example, a new type of fabric would call for a Utility Patent application, while a new decorative fabric pattern would involve a Design Patent application. Subject to certain exceptions, newly developed plant varieties can be the subject of Plant Patent applications. A Provisional Patent application can be filed one year in advance of a Utility Patent application in order to secure a “priority date” for the Utility Patent application. Since earlier patent applications predating the “priority date” are considered to be prior art that may be cited against patentability of the invention at hand, it is sometimes advantageous to secure an early priority date by filing a Provisional Patent application in advance of the Utility Patent application.

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