Free Patent Search
Purpose
 A free patent search can be done online. It provides a wealth of information and is one of the first tools we use as inventors.
The purpose of a patent search is to collect information relevant to your invention. You are looking for information that may effect the success of your idea. A search begins with finding patents that are similar to your invention. You want to establish whether your invention is new or whether it infringes on an existing patent. A preliminary us patent search can be done yourself. It is not a substitute for a professional search done by a competent patent attorney or agent.
It can provide a lot of useful information. There are drawings and descriptions of inventions, names of inventors, assignments and lawyers. This is valuable information for preparing your invention.
Google Patent Search
An effective search requires the use of keywords that are relevant to what you are looking for.
A good search engine for conducting a us patent search is Google and they host the entire collection of patents filed with the United States Patent and Trademark Office (USPTO) - approximately 7 million patents. Google does not yet cover International patents or U.S. patents issued over the last few months.
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