N Sweat Patent Search (2)
Basics of Patent Search Part 1 • Search Query (Boolean Operators, Proximity Searching) • Field Description in a Patent
Part 2 • Strategy to Patent Search • Patent Search Databases
Should we use keywords or classification to search? The use of BOTH keywords and classification will be the best way to attain relevant results.
Overview • Problems with keyword search only – How to Overcome
• Problems with classification search only – How to Overcome
• 7 Highly Effectives Steps to Patent Search
Problems with the use of Keywords only Problems
Differences in American and British English
Tire (American) vs Tyre (British)
Poor translation from foreign patents
Accuracy of machine translation is at most 60-70%
Too many synonyms
Method, Mechanism, Means, Process have similar meanings
E.g. Mousetrap = Rodent Extermination Device
Different ways of spelling company names
Sony Electronics or Sony Corporation
Ways to overcome • Thesaurus • Technical Dictionary • Technical Thesaurus – INSPEC (Electrical Engineering Terminologies) – MESH (medical subjects)
Problems with the use of Classification only Problems
Complex naming of Classification
Under ECLA, the jargon for Pencil is Writing Implements.
For rapidly developing technologies, an update of the IPC classification every 5 years maybe inadequate.
Some databases may not update their old classification even
Lack of classification in Canadian Patents
Ways to overcome â€˘ Use the free databases that are available online (as shown in the next slide) â€˘ Compare the classification systems in different databases to reach a consensus
Important Classification Classification Systems
EPO European Classification (ECLA)
USPTO U.S. Patent Classification (USPC)
WIPO http://www.wipo.int/classifications/i International Patent Classification pc/en/ (IPC)
7 Highly Effective Steps to Patent Search Read the references Supplement with other classifications
Find relevant classifications Examine retrieved documents
Find top classification Keyword/Synonyms Search
Write a concise description of your invention
7 Highly Effective Steps to Patent Search 1. Write a concise description of your invention, listing all the keywords and possible synonyms 2. Perform a keyword search with the full text (as the essence of the patents is buried in the text, not just the abstract or title) 3. In PatSnap, click and find the top UPC and IPC classifications
7 Highly Effective Steps to Patent Search 4. Click on the top classification groups and examine the retrieved documents. 5. Repeat the step with another classification if the classification selected in Step 4 is not relevant. 6. Supplement this with a search using ECLA. 7. Review the references that are at the front page of the prior art patents.
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