When challenging an optical fiber patent, patent databases may not tell the whole story.
Some of the most valuable prior art may be sitting in conference proceedings, technical papers, and society archives published years before the patent was filed.
For photonics, two sources deserve particular attention:
๐น Optica Publishing Group
๐น IEEE Photonics Society / IEEE Xplore
๐ ๐ช๐ต๐ ๐๐ผ๐ผ๐ธ ๐๐ฒ๐๐ผ๐ป๐ฑ ๐ฃ๐ฎ๐๐ฒ๐ป๐ ๐๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ๐?
โข OFC and CLEO conference papers
โข Journal of Lightwave Technology publications
โข Postdeadline and late-breaking papers
โข Older OSA and IEEE/LEOS publications
โข Author preprints and institutional repositories
โข IEEE standards and working-group contributions
โข Technical papers reporting specific fiber parameters
๐ ๐ ๐ฆ๐๐ฟ๐ผ๐ป๐ด ๐ฃ๐ฟ๐ถ๐ผ๐ฟ ๐๐ฟ๐ ๐ฆ๐ฒ๐ฎ๐ฟ๐ฐ๐ต ๐ฆ๐ต๐ผ๐๐น๐ฑ:
โข Establish the critical date first
โข Search Optica and IEEE Xplore independently
โข Prioritize OFC, CLEO, and JLT
โข Search by authors and research groups
โข Follow cited and citing references
โข Look closely at numerical ranges and technical parameters
โข Verify when each reference became publicly accessible
โข Map every reference against the claim limitations
โ ๏ธ ๐๐ผ๐ปโ๐ ๐ฆ๐๐ผ๐ฝ ๐๐ โ๐ ๐๐ผ๐๐ป๐ฑ ๐ฎ ๐ฅ๐ฒ๐น๐ฒ๐๐ฎ๐ป๐ ๐ฃ๐ฎ๐ฝ๐ฒ๐ฟ.โ
Finding a potentially relevant publication is only the beginning.
For ยง 102 anticipation, one reference generally needs to disclose every claim limitation.
For ยง 103 obviousness, the analysis requires identifying the missing limitations, relevant references, and a reason why a skilled person would have combined them.
๐ก ๐๐ฒ๐ ๐ง๐ฎ๐ธ๐ฒ๐ฎ๐๐ฎ๐:
In optical fiber and photonics, the best prior art may not look like patent prior art at all.
It may be a conference paper, a postdeadline presentation, an old IEEE publication, or a technical disclosure from the same research group that later patented the technology.
๐ง๐ต๐ฎ๐โ๐ ๐๐ต๐ ๐ฎ ๐ฝ๐ต๐ผ๐๐ผ๐ป๐ถ๐ฐ๐ ๐ฝ๐ฎ๐๐ฒ๐ป๐ ๐ถ๐ป๐๐ฎ๐น๐ถ๐ฑ๐ถ๐๐ ๐๐ฒ๐ฎ๐ฟ๐ฐ๐ต ๐๐ต๐ผ๐๐น๐ฑ ๐ด๐ผ ๐ฏ๐ฒ๐๐ผ๐ป๐ฑ ๐ฝ๐ฎ๐๐ฒ๐ป๐ ๐ฑ๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ๐.
๐ฅ๐ฒ๐ฎ๐ฑ ๐๐ต๐ฒ ๐ณ๐๐น๐น ๐ฎ๐ฟ๐๐ถ๐ฐ๐น๐ฒ ๐ต๐ฒ๐ฟ๐ฒ:
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