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Patent Searches – Guide for Inventors

February 3rd, 2020patent attorney india

Patent attorney conducts various types of patent searches for inventors including prior art search covering patent and non-patent literature, patent invalidation searches, freedom to operate (FTO) search or product clearance search. The different types of patent searches assist in achieving multiple goals, including analysis of patentability or patent eligibility using prior art search results, determining if a patent is valid or not using patent invalidation search, and evaluating risks associated with the infringement of third party patent rights using freedom to operate or FTO searches.

Patent Search Process

The USPTO has published the following Seven-Step Patent Search Strategy for conducting prior art searches of U.S. patents and published applications using some free online resources of the USPTO and EPO (European Patent Office). The process includes the following steps:

  1. Brainstorm Terms

You can come up with terms or keywords in order to illustrate your invention based on its utility and purpose.

  1. USPTO Website Search Box

In the patent office site, the search box found in the top right-hand corner of the home page you need to enter patent classification or Cooperative Patent Classification (CPC) Scheme along with the keywords describing your invention.

Illustration: If you are trying to find CPC Classifications for the patents related to umbrellas, you would enter “CPC Scheme Umbrella”. You can determine the most relevant classification to your invention by scanning the classification’s Class Schemes results.

  1. Reviewing the CPC Classification Definition

By reviewing the CPC Classification Definition you can accordingly verify the relevancy of the CPC Classification.

  1. Preliminary Review

Retrieve U.S. patent documents along with the CPC classification you selected in the PatFT, you can easily retrieve the US patent documents along with the CPC Classification selected in the PatFT (Patents Full-Text and Image). You can easily review and narrow down the most relevant patent publications by focusing on the front page information covering the abstract and the representative drawings.

  1. Review each one in-depth

From the selected set of your most relevant patent publications, you can review each one in great detail for any similarity you come across to your own invention. You need to pay close attention to the additional drawings pages, the specifications and most importantly, the claims.

Also, the references cited by the applicant or the patent examiner or both can lead you to an additional set of relevant patents.

  1. Document Retrieval

Retrieve U.S. published patent applications along with the CPC classification you selected in Step 3 in the AppFT (Applications Full-Text and Image), you can use the same approach used in Step 4, in which you narrow down the results to the most relevant patent applications. After this, you need to examine the selected published patent applications closely and paying close attention to the additional drawings pages, their specifications and most importantly their claims.

  1. Widen your search

Widen your search to find more U.S. patent publications using keyword searching in PatFT or AppFT archives, classification searching of non-U.S. patents on the European Patent Office’s Worldwide Espacenet patent database and searching non-patent literature disclosures of inventions using the free electronic and print resources of your nearest Patent and Trademark Resource Center.

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Patent Opinion

The patent legal opinion and analysis provides a problem solution approach to the client which provides an edge over their competitors. The different types of patent searches help clients to anticipate future improvements in light of prior art patent results identified in the process of patent searching. As a crucial first step, patent lawyers and patent agents conduct inventor’s interview to begin the patent searching projects. The process of the inventor’s interview includes a discussion between the inventor and patent attorney to come to a conclusion as to what is the problem’s solution of the current invention and formulate a problem solution statement.

Patent Search Cost

The cost of patent searching depends upon the complexity of the invention as the number of working hours has to be calculated before providing a flat fee quote. To find important previous patents with in-depth legal analysis, the process includes the following steps:

Step 1: Reading the inventor disclosure to understanding the inventive technology.

Step 2: Identifying the problem-solution statements from the patent-related document provided by the inventor.

Step 3: Identifying the inventive concept of the underlying invention the document provided.

Step 4: Invention analysis and writing down the keywords which will be used for patent searching in the patent database.

Step 5: Patent keyword research, important inventor name search, patent classification, patent family search in patent databases.

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