PATENT CLAIM ANALYSIS

Application Number: 15777162
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["355", "067000"]

Abstract:
A method of measuring a position of an alignment target on a substrate using an optical system. The method includes measuring a sub-segmented target by illuminating the sub-segmented target with radiation and detecting radiation diffracted by the sub-segmented target using a detector system to obtain signals containing positional information of the one sub-segmented target. The sub-segmented target has structures arranged periodically in at least a first direction, at least some of the structures including smaller sub-structures, and each sub-segmented target is formed with a positional offset between the structures and the sub-structures that is a combination of both known and unknown components. The signals, together with information on differences between known offsets of the sub-segmented target are used to calculate a measured position of an alignment target which is corrected for the unknown component of the positional offset.

Claim (Index 20):
A lithographic apparatus comprising:\n a patterning subsystem configured to transfer a pattern to a substrate; and a measuring subsystem configured to measure positions of the substrate in relation to the patterning subsystem, wherein the patterning subsystem is arranged to use the positions measured by the measuring subsystem to apply the pattern at a desired position on the substrate, wherein the measuring subsystem is arranged to position the applied pattern by reference to a measured position of an alignment target provided on the substrate, and wherein the measuring subsystem is arranged to calculate the measured position of the alignment target by the method according to  claim 17 .

Metadata:
- Claim Count in Document: 41.0
- Percentile: 93.0
- Lexical Diversity: 2.07143
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14764939', '15032507', '15105349', '15967861', '15358321']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7100557109328527
- 35 USC 102 Novelty (BERT): 0.4945790825974945
- Combined Prediction Score: 0.688508048099317
- Mean Citation Score: 258.7282
- Max Citation Score: 303.3837
- Similarity Product: 249.6230717511892

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

Dataset: test