Kenneth Avila, Esq. - Patents, Trademarks, and Business Law
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Types of Patent Searches

10/1/2017

7 Comments

 
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There are a number of different types of patent searches that may be perform.  Some patent attorneys farm out their searches to paralegals within their firm or worse to a search firm in another country.  In these cases a patent attorney only views the results of the search and the patent attorney has no clue as to the "journey" taken by the searcher.  The journey taken by the searcher is very informative in and of itself and quite helpful in the prosecution of a patent application as it gives the searcher a view of the patent "landscape" circling about the invention at hand.  It is like being on the ground of a thick forest and only seeing the trees about you rather than above the forest and seeing the entire forest.  As a result I disagree with with practice of farming out the searches.  I perform all of my own searches using special software applications that are professionally designed for searching patents across the many patent databases about the globe.  However, that said, examples of patent searches that I may perform include:
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  • Company specific search to determine a company's patenting activity.  By comparing a company's "patent trail" you may uncover what sorts of technologies a company is investing their time and money into.  With this information you may develop appropriate business plans to counter your competitor's investments.
  • Search based on a specific individual's patenting activity.  These searches are useful in knowing if a potential employee does hold the patents they are claiming in their resume, the patenting activity of employees in competing companies that you wish to hire, or to determine if a patent you are negotiating for is indeed owned by the party you are negotiating with.
  • Research as to patent activity in a particular market.  When investigating new markets it is always beneficial to research the number of patents that have been filed in that market and view a histogram as to the number of filings over time.  With this information you may determine how intellectually "crowded" that market is and how "hot" the market is.

There are other kinds of searches that may be performed in addition to those above but the two major types of searches that are typically performed by patent attorneys are (i) infringement and (ii) patentability searches.

Infringement Searches:  The infringement search looks to answer the question "Has your invention (i) already been claimed by an inventor (ii) in a patent that is still enforceable?".  

To determine if the first part of this test is satisfied we have to look in the "Claims" portion of the patent.  Basically a patent is comprised of three parts: figures; specification, also called the description; and claims.  The figures contains drawings of the inventive concept while the specification contains in words what is shown in the figures.  The claims, found at the end of the patent, describe the inventive concept that the patent actually protects.  The figures and the specification must fully support each other in that whatever is described in the specification must be supported by the drawings and the features in the drawings must be supported by the description.  The claims finds all of its support in both the figures and 
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the specification.  You may almost think of a patent as a triangle with the figures, specification, and claims at each point of the triangle.  If you take out any of the points you no longer have a triangle and likewise with patents.  Now that I have given you this background information on figures, specification, and claims, you may understand that infringement is determined by comparing the claims of a patent to your invention.  How close the claims come to describing your invention will determine your risk for infringing a patent.

Determining if the second part is satisfied is more difficult and unfortunately more important because if a patent is no longer enforceable it is in the public domain and free for all to copy.  You may think of the patent as having been expired.  You cannot infringe upon a patent that has expired but determining when a patent expires is not easy.  We know that an utility patent has a life span of 20 years while a design patent has a life span of 14 years.  Unfortunately there are other events that may impact the life span of a patent.  One event is if the patent office unnecessarily delays when processing your patent.  In these cases the patent office will add to the life span of the patent the same number of days where due to their actions your patent's issue date was delayed.  However this is rather unusual and typically amounts to less than 100 days being added to the life span of a patent. The one event that significantly impacts the life span of a patent is the nonpayment of maintenance fees that are due 3.5, 7.5, and 11.5 years from the date the patent was issued.  Even if payment is not made there is a grace period of six months where the patent remains enforceable if a payment is made along with an extra fee.

In spite of the problems in determining if a patent is enforceable infringement searches are easier to perform because:
  1. Only patents in the USA patent database need to be searched.  Almost 25% of the patents on the planet are registered in the USA and you are only liable for infringement if you infringe on a patent that has been issued by the USA patent office.
  2. Although the USA patent database has over 9 million patents most of those patents have expired for the reasons above.
  3. The claims portion of a patent is usually short making it easier to read.

Patentability Searches:  The patentability search looks to answer the question "Can you get a patent on your invention?". This question is very different than the question to be answered by the infringement search so the search is different.

For background, there are three requirements to secure acceptance of your patent application at the patent office.  These requirements are: 
  1. The invention must be useful and not abstract (§101).  This is an easy requirement to meet for nearly all applications.
  2. The invention must be novel, that is it must not have existed anywhere at anytime (§102).  This can be a difficult requirement to overcome as the not existed anywhere means anywhere on the planet.
  3. The invention cannot be an obvious idea or improvement  (§103).  This is the most difficult requirement to overcome as the patent office may combine patents or other document, taking concepts from each, and argue that by combining all of the concepts from each of the documents they may reproduce your inventive concept.
The first requirement is rather easy to meet and for the most part I can make a determination on this requirement when you come in for an initial consult.  However for some ideas that are more abstract, such as software or processes, it may not be so clear cut and I will have to perform some research to reply with an answer.

For the remaining two requirements we have to search through various patent databases.  However, unlike the 
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infringement search above where I would read through the claims to determine if your inventive concept infringes, the patentability search requires that I read through the longer and more difficult specification section of the patent to see if your inventive concept has been described.  This makes the search more time consuming than the infringement search.

As I find patents that relate to your inventive concept I quickly read through them marking interesting sections and then file them away.  Depending upon the various aspects of your inventive concept I may have to perform other searches to find patent activity that cover those aspects and repeat the process of locating patents and then marking interesting sections.  Note that here I do not filter out expired patents because expired patents may be used against your inventive concept to raise a novelty (§102) or nonobviousness (§103) refusal.  Once I have all of the relevant documents together I may now look at the risk of getting novelty (§102) or nonobviousness (§103) refusals.

Performing all of this takes a lot of concentrated study and thus the greater cost.  However it is a "must do" search as otherwise all of the money invested in drafting and filing the patent may be at risk.
7 Comments
Deb Pearl link
1/29/2018 05:56:44 am

Thank you for the information about the types of patent searches. My husband has been wondering about patents ever since he wanted to make something. That is good to know to get a patent that the invention must be useful and not abstract. I think my husband's invention fits that description.

Reply
Kenneth Avila link
1/29/2018 01:00:12 pm

Thank you for your comments. If your husband's invention is useful then searches are required to determine if you satisfy the next two requirements: novelty and obviousness. I use special software to conduct my patent searches but a good, and free, online source is Google patents at the URL: patents.google.com.

Reply
Jordan Curry link
3/21/2018 07:09:15 pm

I didn't realize that most of the 9 million patents that the USA database has issued have expired. It's nice that the claims portion is much easier to write out. If I had a sweet invention I would definitely get a patent agent to help me register!

Reply
Kenneth Avila
3/27/2018 11:08:43 am

You are right in that most patents have expired but given the increasing number of patent filings over the past 20 years the ratio of expired patents to active patents is 3:2, almost half and half!

Reply
Lilia Robberts link
7/2/2018 05:11:26 am

I am thinking of starting a type of engineering company. But I am hesitant because of different risks I would be taking. I have been thinking of finding a good patent attorney. Thank you for sharing with me that it is hard to know exactly when a patent expires, I found that very interesting.

Reply
Kenneth Avila link
7/2/2018 08:32:27 am

Hi Lilia,

Starting a new company is a challenge but the personal satisfaction is great. Patents are fairly expensive but there is no other better way to protect your intellectual property. However, all things being equal, my first recommendation would be to protect your name with a trademark. Nothing worse than having to change your name after all of the hard work you have put in building up your customer goodwill!

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Frederick Price link
11/12/2022 05:53:05 pm

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