PATENT CLAIM ANALYSIS

Application Number: 15875156
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["355", "053000"]

Abstract:
Target structures such as overlay gratings (Ta and Tb) are formed on a substrate (W) by a lithographic process. The first target is illuminated with a spot of first radiation ( 456 a , Sa) and simultaneously the second target is illuminated with a spot of second radiation ( 456 b , Sb). A sensor ( 418 ) detects at different locations, portions ( 460 x−,  460 x +) of said first radiation that have been diffracted in a first direction by features of the first target and portions ( 460 y−,  460 y +) of said second radiation that have been diffracted in a second direction by features of the second target. Asymmetry in X and Y directions can be detected simultaneously, reducing the time required for overlay measurements in X and Y. The two spots of radiation at soft x-ray wavelength can be generated simply by exciting two locations ( 710 a , 710 b ) in a higher harmonic generation (HHG) radiation source or inverse Compton scattering source.

Claim (Index 30):
The inspection apparatus of  claim 29 , wherein the first performance parameter represents overlay performance in the first direction and the second performance parameter represents overlay performance in the second direction.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 2.11111
- Patent Class: 355.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14794013', '15435593', '15683216', '14838268', '15834763']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7315982514886855
- 35 USC 102 Novelty (BERT): 0.5265424704667936
- Combined Prediction Score: 0.7110926733864963
- Mean Citation Score: 343.0575340000001
- Max Citation Score: 365.839
- Similarity Product: 213.2956301758289

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

Dataset: test