PATENT CLAIM ANALYSIS

Application Number: 15925325
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["356", "366000"]

Abstract:
A system for measuring overlay from a multi-layer overlay target for use in imaging based metrology is disclosed. The system is configured for measuring overlay from a multi-layer overly target that includes three or more target structures, wherein a first target structure is disposed in a first process layer, a second target structure is disposed in a second process layer, and at least a third target structure is disposed in at least a third process layer. The system includes an illumination source configured to illuminate the target structures of the multi-layer overlay target, a detector configured to collect light reflected from the target structures, and one or more processors configured to execute a set of program instructions to determine overlay error between two or more structures based on the collected light from the plurality of targets.

Claim (Index 14):
The system of  claim 1 , wherein at least some of the two or more pattern elements have an individual center of symmetry.

Metadata:
- Claim Count in Document: 62.0
- Percentile: 90.0
- Lexical Diversity: 2.28571
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13186144', '13783903', '13446133', '13964789', '12101439']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7660003713542736
- 35 USC 102 Novelty (BERT): 0.5431207410731965
- Combined Prediction Score: 0.7437124083261659
- Mean Citation Score: 283.869038
- Max Citation Score: 399.5543
- Similarity Product: 328.8581766665816

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