For newer Guidelines go to the USPTO: http://www.uspto.gov/trademark/guides-and-manuals/trademark-examination-guides

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• Examination Guide NO.1-01
  handling related applications - companion and conflicting applications
   
• Examination Guide NO.4-00
  Identifications of Goods and Servies, final requirement for amendment of
   
• Examination Guide NO.3-00
  Identifications of Goods and Services, general guidelines
   
• Examination Guide NO.2-00
  Productconfigurations; Product Packaging; Trade Dress for Services; Color marksl Functionality
   
• Examination Guide NO.1-00
  "Internet" and "Intranet," use of terms in identifications of goods and services
   
• Examination Guide NO.1-99
  Phantom marks; Functionality; goods in Trade; Publications, Marks that identify coloumns or sections of: Online publications, identification of; Minor as Applicant; TEAS
   
• Examination Guide NO.3-99
  Trademark Law Treaty Implementation Act Changes
   
• Examination Note 98/1: Classification and identification of Goods and Services Issues
   
• Changes to Requirements for Petitions to Commissioner in Trademark Cases
   
• Examination Guide NO.3-89
  Implentation of the Trademark Law Revision Act of 1988 and The Amended Rules OF Practice In Trademark Cases
• Examination Guide NO.4-89
  Surname Refusals
• Examination Guide NO.1-90
  Supplemental Guidelines Concerning the Trademark Law Revision Act of 1988 and the Revised Rules of Practice in Trademark
• Examination Guide NO.2-90
  Drawings Including Diacritical Marks
• Examination Guide NO.3-90
  Supplemental Guidelines Concerning the Trademark Law Revision Act of 1988 and the Revised Rules of Practice in Trademark Cases
• Examination Guide NO.1-91
  Supplemental Guidelines Concerning the Trademark Law Revision Act of 1988 and Other Areas
• Examination Guide NO.2-91
• Examination Guide NO.1-92
• Examination Guide NO.1-94
  Merely Descriptive and Generic Refusals
• Examination Guide NO.1-99