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 44):
The radiation collector of  claim 41 , wherein the reflective suppression filter further comprises:\n a third area at a third reflective surface level and a fourth area at a fourth reflective surface level, wherein:\n each of the third reflective surface level and the fourth reflective surface level is different from each of the first reflective surface level and the second reflective surface level; \n the third area is adjacent the fourth area and the second area; \n the second reflective surface level and the third reflective surface level have a second separation distance, determined in a direction substantially perpendicularly to the second area and to the third area; \n the second separation distance is made such so as to cause substantial destructive interference between the first component reflected off the second area and the first component reflected off the third area, as well as substantial destructive interference between the second component reflected off the second area and the second component reflected off the third area; \n the third reflective surface level and the fourth reflective surface level have a third separation distance, determined in a direction substantially parallel substantially perpendicularly to the third area and to the fourth area; and \n the third separation distance is made such so as to cause substantial destructive interference between the first component reflected off the third area and the first component reflected off the fourth area, as well as substantial destructive interference between the second component reflected off the third area and the second component reflected off the fourth area.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 1.90566
- Patent Class: 250.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13433923', '15284513', '13059057', '13058783', '15320749']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7215947892797908
- 35 USC 102 Novelty (BERT): 0.5002971866845002
- Combined Prediction Score: 0.6994650290202618
- Mean Citation Score: 194.77180600000003
- Max Citation Score: 206.82559
- Similarity Product: 126.24204210482596

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

Dataset: test