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Just as you should record your laboratory processes and observations, you may find it useful to record your literature research process. Without some type of research process log, busy students and researchers (and even librarians) can repeat steps or leave gaps in their literature review process. This worksheet may assist you - or create a log that works for you.
If you want to use Google Scholar as one of your search tools, this linked document describes how to update the Google Scholar settings to tie it to the subscriptions you have access to through UNLV and other libraries.
There are many tools available to help you search for publicly available patent applications, granted patent documents and other documentation of prior arts.
Simultaneously search Google Patents and Google Scholar to locate existing documentation of inventions. Searches within the United States Patent and Trademark Office (USPTO), the European Patent Office (EPO), and the World Intellectual Property Organization (WIPO), as well as the materials within Google Scholar.