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 35):
The inspection apparatus of  claim 27 , wherein the source arrangement is operable to focus first laser radiation at the first source location and to focus second laser radiation at the second source location, to cause generation of the first radiation and second radiation respectively at wavelengths different to the wavelength of the first and second laser radiation.

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): 0.7304808784135478
- 35 USC 102 Novelty (BERT): 0.5257366034482123
- Combined Prediction Score: 0.7100064509170143
- Mean Citation Score: 343.0575340000001
- Max Citation Score: 365.839
- Similarity Product: 275.9567400184273

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