The five primary requirements for patentability are: (1) patentable subject matter; (2) utility; (3) novelty; (4) non-obviousness; and (5) enablement. Like trademarks, patents are territorial, meaning they are enforceable in a specific geographic area.
Patency can be primary (the graft is functioning without any intervention), assisted primary (the graft has required intervention to keep it functioning), or secondary patency (restored patency period after thrombosis).
The most important difference between a patent pending status and holding a patent is that patent pending denotes that a patent application has been filed. "Patent pending" simply means that you have applied for, but have not yet been granted, a patent.
The types of patent application are: Provisional Application. Ordinary or Non-Provisional Application. Convention Application. PCT International Application. PCT National Phase Application. Patent of Addition. Divisional Application.
Patent applications: the three criteria Novelty. This means that your invention must not have been made public – not even by yourself – before the date of the application. Inventive step. This means that your product or process must be an inventive solution. Industrial applicability.
Under U.S. Code Title 35, the U.S. Patent and Trademark Office (USPTO) issues three different types of patents: utility patents, design patents, and plant patents.
A patent application is a request pending at a patent office for the grant of a patent for an invention described in the patent specification and a set of one or more claims stated in a formal document, including necessary official forms and related correspondence.
The United States Patent and Trademark Office (USPTO) Public Search Facility located in Alexandria, VA provides the public access to patent and trademark information in a variety of formats including on-line, microfilm, and print.
Patent application forms can be found on the USPTO website. All of the forms related to patent applications can be found on the link here, or by navigating to the USPTO website and clicking on the “Forms” link under the “Apply for a Patent” section on the “Patents” page.
Hence, after a U.S. patent application is filed, it is published by the U.S. Patent Office for the public to view even if it hasn't been granted as a patent yet.