Patent: Patent Searching / A Presentation at NALSAR Hyderabad - Nitin Nair
Patent Searching
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PATENT SEARCHING
By
Nitin Nair
Brain League IP Services
© 2009 Brain League IP Services Pvt. Ltd.
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Sample patent document
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Search at various stages of Patent Conception Stage Research and Development Stage Patent Application Stage Litigation Stage
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To determine novelty of the invention To determine if it is useful and non-obvious To be abreast with the field of invention To track competing products To avoid infringement Invalidation search
Why Search for Patents?
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Patent databases Public Databases
www.uspto.gov www.espacenet.com www.freepatentsonline.com www.wipo.int www.google.com/patents
Private Databases www.delphion.com www.micropatent.com
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Searching for patents Patent number KeywordOther ways to search
Patent, Publication, Application, Priority, etc.Numbers
Applicant, Inventor, Assignee, Examiner, Attorney/Agent, etc.
Names
Application, Issue, Publication, etc.Dates
International (IPC), U.S. Classification, European Classification, etc.
Classification
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Classification Classification is based on subject matter. Each patent office has its own
classification system. e.g.: a) 91/465 ; 5/600; 74/110; 74/520; 91/471
b) A61G 13/00; A61G13/10; F15B 011/08
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USPTOUnited States Patenthttp://www.uspto.gov U.S. Patent database is the largest
technical database in the world!
If you’re looking for the “state-of-the-art,”
you must search the U.S. Patent database!”
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Seven step Strategy 1. Determine initial classification (use Classification Index
or do a patent keyword search).
2. Scan the class schedule in the Manual of Classification.
3. Read Subclass definitions to establish the scope of the subclasses.
4. Browse patent titles and abstracts. Repeat as necessary.
5. Retrieve the subclass listing.
6. Review full text patent documents.
7. Check References Cited, Referenced by and previously published applications in relevant patents.
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USPTO
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USPTO PN Patent Number IN Inventor Name ISD Issue Date TTL Title ABST Abstract ICN Inventor Country SPEC
Description/Specification AN Assignee Name
E.g.: ICN /(India) and AN/ (SISO) and SPEC/(cellular device)
CCL Current US Classification ICL International Classification APN Application Serial
Number APD Application Date REF Referenced By FREF Foreign References PCT PCT Information GOVT Government Interest
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USPTO
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USPTO
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USPTO
Other ways to define classes Conduct an advanced search to retrieve the
most relevant patents Check their classes Read the definition and continue…
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© Brain League IP Services Pvt. Ltd
EPO http://ep.espacenet.com/ Provided by the European Patent Office Searchable in original language of patent
application Includes patent publications from around the
world including UK, EP, WO, European, Japanese, worldwide patents
Full-text PDF documents including drawings, descriptions, claims are available for free for most of the retrieved patents
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© Brain League IP Services Pvt. Ltd
EPO
Databases Covered EPO WIPO World wide
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© Brain League IP Services Pvt. Ltd
EPO EPO Covers patents filed and published through
the EPO route within 24 months It is not possible to perform searches either
in the abstract field or using a European Classification symbol.
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© Brain League IP Services Pvt. Ltd
EPO WIPO Covers patent applications published by
WIPO in the last 24 months Not possible to perform a search in the
abstract field or using a European Classification symbol.
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EPO Worldwide Information about published patent applications
from over 80 different countries and regions. EPO patent application older than 24 months WIPO Patent application older than 24 months All JP Patents since 1976 irrespective of their
filing route
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© Brain League IP Services Pvt. Ltd
EPO - Positives Classification standards almost same but more
comprehensive than international classification Can search for WIPO, worldwide and EPO
patents under one umbrella. Good source for legal status and equivalents data Link to EPO register Can save searches Last search is automatically saved Family equivalents including US patents
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© Brain League IP Services Pvt. Ltd
EPO - Negatives Result limit: 500 Often classification search needs to be
clubbed with keywords to reduce the results.
Field restrictions are few as compared to USPTO
No of classes are less. Thus no. of patents per class is more.
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© Brain League IP Services Pvt. Ltd
WIPO http://www.wipo.int/pctdb/en/ Only documents through the PCT route can
be searched
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© Brain League IP Services Pvt. Ltd
WIPO Types of Searches Simple Advanced Structured Classification search
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WIPO - Positives No display limit Structure search enables 11 restriction fields at
once Can search in claims Details of national phase entry wherever available Can search by week All documents and notices related to the
application is available (file history)
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WIPO - Negatives Fewer no. of classes IPC classification covers fewer groups
compared to ECLA
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Big Patents Can search only bibliographic data Alphabetical list of assignee So far the best online source for Indian
patent search
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Delphion http://www.delphion.com
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Delphion
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Delphion - Advanced Search And Or Not <in> <, =, >, <=, <= <near> <near/n>
<order> <thesaurus> ? * [weight]
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© Brain League IP Services Pvt. Ltd
Delphion - Positives Allows search in US, EP, WO, DE, JP Derwent titles Extensive list of restriction fields Can search in claims INPADOC search Clustering and mapping based on Keywords Export results to excel File history available for a cost Alerts
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Delphion - Positives Snapshots: Statistical data
Top Assignee Top Inventors How many patents being filed in a particular are per year
Non Patent Prior art Search Relevancy Score Classification search possible once classes are
identified
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Delphion - Negatives Limit of 500 results
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Micropatent http://www.micropat.com
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Micropatent
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Micropatent AND OR NOT XOR * *n ?
<= >= <> ADJn NEARn
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© Brain League IP Services Pvt. Ltd
Micropatent - Positives Allows search in US, EP, WO, DE, FR, JP, GB Sort result by family Worksheets Save queries: Allows to rerun the search anytime Can export results to EXCEL Patent graph: top 10 assignee, top ten classes Alerts file history
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Micropatent - Positives 1 member per family Duplicates from the saved search Can conduct classification search
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Micropatent - Negatives Limit: 20000
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THANK YOU
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