3 Tips to ensure 

Patentability  of your  invention

Before you file Patent Application

Make sure it falls in one of 4 eligible categories

It is not an obvious invention

It is not already invented by someone

Process

Machine

Composition of Matter

Manufacture

Invention has to be   one of 4 patent eligible types

Somebody already filed patent for it

Somebody already published it

Somebody publicly used or sold it

Somebody disclosed it before you

You published it more than 1 year ago

You publicly disclosed 1+ year ago

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It was already disclosed by someone else or disclosed by you

Somebody made it publicly available

Obvious inventions are not patent eligible

Invention must not be obvious, or an obvious combination or substitution

Before filing Patent Application make sure your invention is (1) 1 of 4 eligible categories (2) not already publicly disclosed, and  (3) not an obvious invention.