Patent agency business:
  Patent consultation
  patent mining
  patent search and analysis
  writing and submission of application documents
  reply to examination opinions
  reexamination
  invalidity and infringement

Trademark agency business:
  Consultation on trademark protection strategy
  trademark confirmation
  trademark protection

Copyright agency business:
  Preliminary consultation
  review and modification of application
  reply to review comments
  negotiation on copyright transfer
  copyright inquiry and change

Litigation agency business:
  Preliminary consultation
  preparation of relevant procedures
  writing indictment and sorting out evidence
  preserving evidence
  Filing a case
  Court proceedings

Transaction agency business:
  Process consultation
  retrieval
  evaluation
  communication and negotiation