This is the "Welcome!" page of the "Patents and Trademarks" guide.
Alternate Page for Screenreader Users
Skip to Page Navigation
Skip to Page Content

Patents and Trademarks  

Databases, Information Resources, National Offices.
Last Updated: Jul 18, 2016 URL: Print Guide RSS UpdatesEmail Alerts

Welcome! Print Page

Caltech Library / OTTCP - Patents Talk Slides

Patent Information @ Caltech

The Caltech Library hosts a Patents class each term, with a speaker from the Caltech Office of Technology Transfer. Resources related to the class can be found below.

Introduction to Patent Searching

Patents can be an excellent source of information on inventions or chemical processes. The introduction/background section can provide a concise review of the literature with references. Patent databases can be searched by patent number, inventor, assignee, keywords, and classification numbers (which can be a substitute for subject headings), among other fields. It is important to remember that a patent search that relies on keyword searching may be inadequate because there is no controlled vocabulary for patents, and similar inventions can be described in a wide variety of ways. The resources in this LibGuide will help you navigate and search several patent sources.

  • Anatomy of a Patent (Michael White, Queen's University)
    A two-page visual guide to the important parts of a patent.
  • Finding Chemical Patents (UT-Austin)
    A quick guide to types of patents and patent searching.
  • History of Patent Law - Infographic
    "Some highlights from the graphic encompass several aspects of patent law’s history starting at around 500 B.C., including The first ever recorded document that granted rights to an individual and the establishment of the US patent act in 1790. It is a diverse visual resource that appeals to professionals or enthusiasts in legal, historical or entrepreneurial fields alike."
  • How do I read a patent (Brown & Michaels)
    A good overview of the parts of a patent.
  • How to Find Patents Related to a Specific Product
    "There are hundreds of thousands of patented products on the market ... known by a brand name or trademark.
    ... product names appear rarely in patent documents ... because companies tend to file patent applications long before considering the name ...
    Patent offices also discourage the use of product names and trademarks in patent applications."
  • Patent Research
    Detailed information on the Cooperative Patent Classification (CPC), types of patents, and information on the Patent and Trademark Resource Center (PTRC) at Texas A&M University.
  • Patents and Designs
    Mike White's patent/design web page ... provides RSS and email updates.

Caveats Of Full Text Searching

Each patent office publishes their data "warts and all." In general, they do not correct misspellings, OCR errors, or other typos. This complicates search strategies in patent office databases and other third-party databases based on raw patent office data. For example, the USPTO full-text patent database has at least 15 misspellings or variations of the assignee name "Eastman Kodak," e.g. Eastman Kodal, …Kokak, … Kdak, Eaastman Kodak, etc. The same errors appear, for example, in Espacenet and Google Patents (which also has an enormous number of OCR errors). Owners of U.S. patents may file "certificates of correction" (CC) in order to correct these kinds of problems. The USPTO simply attaches the CC to the end of the original patent. CCs are not searchable in the USPTO database, but are included with the image files.

More information about Certificates of Correction:

Commercial vendors (such as Derwent WPI, MicroPatent, and SciFinder) expend considerable time and effort cleaning up and enhancing patent data, and generally substitute a more descriptive patent title. This can be problematic in SciFinder, since the original title is not included in the record. The 'free' patent databases are great for answering general questions, retrieving copies of patents, educational purposes, current awareness and preliminary patent searching, but they are NOT a good choice if your business plan or research project depends on a complete patent search.

Dana Roth

Profile Image
Dana Roth
Contact Info
325 Sherman Fairchild Library
Pasadena, CA 91125
(626) 395-6423
dzrlib AT
Send Email

Your Librarian

Profile Image
Donna Wrublewski
Logo - LinkedInLogo - Twitter
Contact Info
Sherman Fairchild Library
dtwrub AT

Loading  Loading...