PATENT CLAIM ANALYSIS

Application Number: 15753811
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["250", "50400R"]

Abstract:
Disclosed is a suppression filter having a profile defining at least two reflective surface levels, each reflected surface level being separated by a separation distance. The separation distance is such that the reflective suppression filter is operable to substantially prevent specular reflection of radiation at a first wavelength and at a second wavelength incident on said reflective suppression filter. Also disclosed is a radiation collector, radiation source and lithographic apparatus comprising such a suppression filter, and to a method of determining a separation distance between at least two reflective surface levels of a suppression filter.

Claim (Index 36):
A reflective suppression filter, comprising:\n first and second areas at respective first and second reflective surface levels, wherein the first area is adjacent the second area at a separation distance determined in a direction substantially perpendicularly to the first area and to the second area; wherein the reflective suppression filter is configured to suppress reflection of a first component of a first wavelength and a second component of a second wavelength of radiation incident on the reflective suppression filter, the first wavelength being different from the second wavelength; and wherein the separation distance is configured to cause substantially destructive interference between the first component reflected off the first area and the first component reflected off the second area and to cause substantially destructive interference between the second component reflected off the first area and the second component reflected off the second area.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 1.90566
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13433923', '15284513', '13059057', '13058783', '15320749']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6997795513794508
- 35 USC 102 Novelty (BERT): 0.4851525922524434
- Combined Prediction Score: 0.6783168554667501
- Mean Citation Score: 194.77180600000003
- Max Citation Score: 206.82559
- Similarity Product: 146.96576844601333

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test