PATENT CLAIM ANALYSIS

Application Number: 16122495
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["382", "141000"]

Abstract:
A method of monitoring overlay is used in a manufacturing process in which successive layers are deposited one over another to form a stack. Each layer may include a periodic structure such as a diffraction grating to be aligned with a periodic structure in another layer. The stacked periodic structures may be illuminated to form + and − first order diffraction patterns from the periodic structures. An image of the stacked periodic structures may be captured including + and − diffraction patterns. The + and − diffraction patterns may be compared to calculate the overlay between successive layers.

Claim (Index 6):
The method of  claim 1  comprising determining an asymmetry factor for asymmetry in the positive and negative diffraction patterns not caused by overlay, and applying the asymmetry factor to the overlay calculation.

Metadata:
- Claim Count in Document: 48.0
- Percentile: 97.0
- Lexical Diversity: 1.87273
- Patent Class: 382.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14161398', '15114175', '15305166', '15159009', '15654813']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3293932483379166
- 35 USC 102 Novelty (BERT): 0.4887030959207586
- Combined Prediction Score: 0.3453242330962008
- Mean Citation Score: 201.321358
- Max Citation Score: 238.18785
- Similarity Product: 185.6797539769292

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

Dataset: test