PATENT CLAIM ANALYSIS

Application Number: 16266881
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-09
Patent Classification: ["355", "030000"]

Abstract:
A difficulty of contamination interfering with a grid plate positional measurement system is addressed. In one embodiment contamination is prevented from coming into contact with the grating or the sensor. In an embodiment, surface acoustic waves are used to detach contamination from a surface of the grating or sensor.

Claim (Index 16):
A lithographic apparatus comprising:\n a substrate table configured to hold a substrate; a reference frame; a grating attached to the substrate table or the reference frame; a sensor attached to the other of the substrate table or the reference frame, the sensor configured to detect radiation redirected by the grating to measure the relative position between the substrate table and the reference frame; and a contamination removal device configured to remove contamination from a surface by changing a property of the surface, the surface being a surface of (i) the sensor, or (ii) the grating, or (iii) a barrier at least partly covering the sensor or grating, or (iv) any combination selected from (i)-(iii).

Metadata:
- Claim Count in Document: 18.0
- Percentile: 99.0
- Lexical Diversity: 1.47222
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12628531', '13183220', '15818232', '15078814', '12629691']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7086252526025454
- 35 USC 102 Novelty (BERT): 0.4844750696390132
- Combined Prediction Score: 0.6862102343061922
- Mean Citation Score: 228.121446
- Max Citation Score: 283.7259
- Similarity Product: 255.7928638629556

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

Dataset: test