Patent and Trademark Offices
U.S. Patent and Trademark Office: http://www.uspto.gov
European Patent Office: http://www.european-patent-office.org
World Intellectual Property Organization: http://www.wipo.org

Courts and Case Law
U.S. Court of Appeals for the Federal Circuit: http://www.fedcir.gov
Federal courts: http://www.uscourts.gov

Food and Drug Administration
U.S. FDA: http://www.fda.gov

Annuity and Maintenance Fee Payment Services
Computer Patent Annuities: http://www.cpajersey.com
CPi: http://www.computerpackages.com

Free Searchable Patent Databases
http://www.uspto.gov/patft/index.html
http://ep.espacenet.com
http://www.wipo.org
http://www.derwent.co.uk
http://tess2.uspto.gov/bin/gate.exe?f=tess&state=d3hudp.1.1

Free Technical Databases/Sources/Depositories
http://www.ncbi.nlm.nih.gov/pubmed/medline.html
http://www.atcc.org

Local Associations
American Bar Association: http://www.abanet.org
American Intellectual Property Association: http://www.aipla.org
Los Angeles IP Law Association: http://www.laipla.org
Orange County IP Law Association: http://www.ocpla.org
San Diego IP Law Association: http://www.sdipla.org

Metric Conversions
http://www.convert-me.com/en/convert/length

Currency Exchange/Conversion
http://www.xe.net/ucc
http://www.rubicon.com/passport/currency/currency.html