PATENT CLAIM ANALYSIS

Application Number: 16246004
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-07
Patent Classification: ["356", "401000"]

Abstract:
Disclosed is a method of measuring a target, and a metrology apparatus. In one arrangement the target comprises a layered structure. The layered structure has a first target structure in a first layer and a second target structure in a second layer. The method comprises illuminating the target with measurement radiation using an illumination profile in the illumination pupil (u) that is offset from an imaginary line (IL) in the illumination pupil passing through the optical axis, to allow propagation to a detection region of the detection pupil of an allowed order (v 2 , v 4 ) of a predetermined diffraction order while limiting propagation to the detection region of an equal and opposite order (v 1 ′, v 3 ′) of that predetermined diffraction order. Scattered radiation of plural double-diffracted allowed diffraction orders (w 2 , w 4 ) is detected. A characteristic of the lithographic process is calculated using the detected scattered radiation of the predetermined diffraction orders.

Claim (Index 21):
The method of  claim 20 , wherein:\n the detected scattered radiation of the allowed diffraction orders comprises a plurality of intensity sub-regions, each intensity sub-region having spatially uniform intensity and being formed by measurement radiation diffracted from a different respective pair of the three or more pairs of target sub-structures, and the calculating of the characteristic of the lithographic process uses a level of intensity in each intensity sub-region to determine the characteristic of the lithographic process.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 99.0
- Lexical Diversity: 2.28205
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15654813', '15477602', '13533082', '15240781', '15683010']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.771390081052785
- 35 USC 102 Novelty (BERT): 0.5475324848018649
- Combined Prediction Score: 0.7490043214276929
- Mean Citation Score: 351.68178
- Max Citation Score: 420.31308
- Similarity Product: 321.0589159346796

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