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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

Novel terminologies

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.

Stagnant Classification

For rapidly developing technologies, an update of the IPC classification every 5 years maybe inadequate.

Obsolete Classification

Some databases may not update their old classification even

Minimal Classification

Lack of classification in Canadian Patents

Ways to overcome • Use the free databases that are available online (as shown in the next slide) • Compare the classification systems in different databases to reach a consensus

Important Classification Classification Systems


EPO European Classification (ECLA) ssification=ecla&locale=en_EP?

USPTO U.S. Patent Classification (USPC) lassification/

WIPO 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.

About IP guide for Start-ups Visit for your weekly dose of Intellectual Property guide for early ventures, written by PatSnap’s PaTENt minutes’ team. Rev up your IP knowledge in just 10 minutes. Each Patent 10 minutes guide consists of 10 slides.

No Sweat Patent Search 2  

7 highly effective steps to patent search

No Sweat Patent Search 2  

7 highly effective steps to patent search