Field: Optical communication
Time and project duration: 3 weeks
Client: A patent law firm in Washington
Search type : Invalidation search, to find Japanese prior art by focusing on Japanese patent search.
Field: optical communication.
Description: The patent to be invalidated relates to a method for determining an optical focus setting and means for setting optical focus.
Database used in the search:
NRI, PATOLIS and IPDL;
Japanese patent type searched:
Japanese patents, including granted patents, patents that are pending, and unexamined patent applications.
To cover a relative wide search scope, we utilized a combination of wide classes and key word strings:
A: (2F065LL07+ 2F112AB00+ 2G059LL01+ 2H011+ 2H011BA00+ 2H054BB06+ 5C033MM01) + G03B3/00+ G02B +G01N21/00) (Japanese unique patent classes and IPC)
B: full text search using key word strings combination.
About 332 hits were generated in the searches. After downloading full documents of these hits and reviewing all these documents, 3 Japanese prior art were uncovered.