Compare:Patent Search System

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This tool allows for side-by-side comparison of the patent search systems that have been reviewed by the Intellogist team. To accurately interpret the table, review the category definitions provided in the Quick Table help topic. Also, be aware that the Quick Tables data is current as of the time the Intellogist article for a given search system was last updated, with the exception of data coverage information, which is updated as we are aware of changes. For more information, see our update policies. If you have questions about the data in the tool, please contact us. If you wish to purchase printable copies of comparison tables, see our FAQ.

Select other Patent Search Systems to compare
System DataGoogle Patent Search
Owner NameGoogle
Intellogist ReportGoogle Patent Search
Main Telephone
Main Facsimile
WebsiteGoogle Patent Search
Customer Support
Tool TypePatent Search Systems, Free Tools
Interface LanguageEnglish
RatingGoogle Patent Search
Overall Rating
  • Currently 3.71 / 5
Rating: 3.7/5 (14 votes)
Data Coverage Rating
  • Currently 3.00 / 5
Rating: 3.0/5 (14 votes)
Document Delivery Rating
  • Currently 3.54 / 5
Rating: 3.5/5 (13 votes)
Import/Export Functions Rating
  • Currently 2.82 / 5
Rating: 2.8/5 (11 votes)
Value Rating
  • Currently 4.07 / 5
Rating: 4.1/5 (15 votes)
Usability Rating
  • Currently 4.15 / 5
Rating: 4.2/5 (13 votes)
Interface Functionality Rating
  • Currently 3.50 / 5
Rating: 3.5/5 (12 votes)
Search Accuracy Rating
  • Currently 3.46 / 5
Rating: 3.5/5 (13 votes)
Company Strength Rating
  • Currently 3.70 / 5
Rating: 3.7/5 (10 votes)
Customer Support Rating
  • Currently 2.30 / 5
Rating: 2.3/5 (10 votes)
Data Coverage Google Patent Search
Full Text: Patent Authority CoverageUS
Full Text: Patent Kind CoverageUS - Granted Patents and Published Applications
Full Text: Number of Authorities1
Partial Text: Patent Authority CoverageN/A
Partial Text: Patent Text CoveredN/A
Bibliographic: Patent Authority CoverageN/A
Machine Pre-Translated Datano No
Full Document Images: Patent Authority CoverageUS
Representative/Front Page ImagesRepresentative images available for US documents as part of full patent drawing sets.
Full Patent Drawing SetsFull drawing sets are available for entire US collection.
Corporate Tree Datano No
Non-Patent Coverageno No
Non-Patent SourcesN/A
Special Indexingno No
Update FrequencyUpdate frequency unknown; developers have stated that updates will take place regularly.
Comments on Missing CoverageSome documents may be missing, contain garbled text, or contain incorrect dates in bibliographic data due to scanning errors.
Family DataGoogle Patent Search
Inpadoc Family Data Coverageno No
Types of Family DefinitionN/A
Derwent WPI Family Coverageno No
Citation DataGoogle Patent Search
Backward Citationsyes Yes
Forward Citationsyes Yes
Citation Data CoverageUS
Special Features of Citation SearchHyperlinks are provided to forward and backward citations from the record view.
Citation Visualization Toolno No
Legal Status DataGoogle Patent Search
Legal Status Data Includedno No
Legal Status Data SourcesN/A
Classification DataGoogle Patent Search
Current US Classno No
Original US Classyes Yes
IPC - Rno No
Original IPC data (v1-v7)yes Yes
Japanese File Index Termsno No
Japanese F-Termsno No
Other National Classification Systemsno No
Search Interface FunctionalityGoogle Patent Search
Search Formyes Yes
Command Line Style Interfaceyes Yes
Index Browsing Featureno No
Allowed OperatorsBoolean operators are available; phrase searching is also supported.
TruncationTruncation is not supported by the search engine. A wildcard may be used to represent a variable word within in a phrase search.
Unique Features of the Search InterfaceSimple and barebones interface.
Viewing ResultsGoogle Patent Search
Max Hit List SizeApproximately 600
Single Representative Imageyes Yes
View Full Document Imageyes Yes, full document images can be viewed (and highlighted) in PNG format from the record view, or downloaded in PDF format.
Patent Drawing Thumbnail Overviewyes Yes
Family Sortingno No
Sorting by Other Criteriayes Yes, a result set may be sorted by date or relevance.
On-the-Fly Machine Translationsno No
Keyword Term Highlightingyes Yes
Keyword Term Navigationno No
User-Defined Highlightingyes Yes, monochromatic highlighting is available.
Highlighting Feature Supports Proximity Operatorsno No
Save Custom Lists From Search Resultsno No
Combining Custom Patent Listno No
Unique Features of The Record ViewSummary page is shown with electronic text and thumbnail images of drawing pages; selecting patent image will open searchable PNG image file in the web browser; PNG image supports keyword highlighting.
Search HistoryGoogle Patent Search
Saving Search Queriesno No
Organizing Search Queriesno No
Stored Search Query Expiration TimeN/A
Combining Search Queriesno No
Exporting Search Historiesno No, queries must be copied and saved elsewhere.
Alertsyes Yes, alerts are only available via RSS feed.
Import, Export and DownloadGoogle Patent Search
Import List of Document Numbersno No
Export Document Datano No
Formats for Export DataN/A
Individual Patent Copy Downloadingyes Yes
Bulk Patent Copy Downloadingno No
File Format for Patent Copy DownloadsHTML, PDF, plain text
AnalysisGoogle Patent Search
Statistical Analysisno No
Graphsno No
Keyword Analysisno No
Customer SupportGoogle Patent Search
Cost/Usage Trackingno No, service is free.
On-Site Trainingno No
Scheduled Web Seminarsno No
Live Helpno No
Online User Guideyes Yes
PricingGoogle Patent Search
Pricing PolicyFree
AssessmentGoogle Patent Search
Primary System StrengthsThe tool is free and fast; one of the few sources of pre-1970s full text US patent data. Relevancy rankings make the tool useful for quick searches.
Weaknesses and AnnoyancesData contains significant scanning errors; classification data is not current; some data appears to be missing; no hit counts are displayed; only 600 hits can be viewed; no search history tool; no saved results tool; no data import or export.
Overall AssessmentThe relevant results (Google-power) and the very fast search and image load times set this tool apart and make it a must use as a first step.
Company StrengthAlthough it does not have a major presence in the patent search industry other than this tool, Google is an extremely well known and successful Web search provider.
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