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2. Utility model - Wikipedia

   en.wikipedia.org/wiki/Utility_model

   Utility model applications may be prepared and filed at local patent offices in countries where utility model protection is available. The table below is a list of countries having utility model protection under various names as at March 2008.

3. Maintenance fee (patent) - Wikipedia

   en.wikipedia.org/wiki/Maintenance_fee_(patent)

   At the end of the half-year window during which a maintenance fee may be paid, a six-month grace period begins during which a patentee may still pay the maintenance fee along with a small surcharge (as of 2016: $160 for a large entity, $80 for a small entity; and $40 for a micro entity) in order to maintain the patent. [29]

4. Utility (patentability requirement) - Wikipedia

   en.wikipedia.org/wiki/Utility_(patentability...

   In United States patent law, utility is a patentability requirement. [1] As provided by 35 U.S.C. § 101, an invention is "useful" if it provides some identifiable benefit and is capable of use and "useless" otherwise. [2]

5. Backlog of unexamined patent applications - Wikipedia

   en.wikipedia.org/wiki/Backlog_of_unexamined...

   Because the actual fees paid to the Patent Office for the examination of a patent application are a fraction of the overall cost of securing a patent (which includes attorney fees), there is reason to believe that even a two-fold or three-fold increase in examination fees will not substantially impede access to the U.S. patent system." [23]

6. Large and small entities in patent law - Wikipedia

   en.wikipedia.org/wiki/Large_and_small_entities...

   The small entity status allows small businesses, independent inventors, nonprofit organizations to file a patent application and maintain an issued patent for a reduced fee—a 60% reduction. [1] Under 13 C.F.R. § 121.802(a), an entity qualifies as a "small business concern", and so qualifies for small entity status, if its number of employees ...

7. Design patent - Wikipedia

   en.wikipedia.org/wiki/Design_patent

   Providing the maintenance fees are paid, utility patents are generally valid for up to 20 years from the date of filing (with some exceptions). [13] Design patents cover the ornamental appearance of an item. Design patents can be invalidated if the design is dictated solely by function (e.g. the outline of a key blade blank).