PATENT CLAIM ANALYSIS

Application Number: 16155091
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["355", "072000"]

Abstract:
A lithographic apparatus including: a projection system to project radiation onto a substrate supported on a substrate stage, during an exposure phase; a sensing system to sense a property of the substrate on the stage during a sensing phase; and a positioning system to determine a position of the stage relative to a reference system via a radiation path between the stage and the reference system, wherein the apparatus is configured to control stage movement relative to the reference system in the sensing phase and to control other movement relative to the reference system during the exposure phase; the stage or reference system having an outlet to provide a gas curtain to reduce ingress of ambient gas into the path; and the apparatus is operative such that a characteristic of the gas curtain is different in at least part of the sensing phase compared to in the exposure phase.

Claim (Index 18):
A lithographic apparatus comprising:\n a substrate stage configured to support a substrate in an environment with an ambient gas; a projection system configured to project a beam of radiation onto the substrate when supported on the substrate stage during an exposure phase; a sensing system configured to sense a property of the substrate on the substrate stage during a sensing phase; a reference system; a positioning system configured to determine a position of the substrate stage relative to the reference system via a path of radiation between the substrate stage and the reference system; an outlet system configured to provide a gas curtain of a barrier gas operative to reduce ingress of the ambient gas into a volume traversed by the path of radiation between the substrate stage and the reference system; and a control system configured to:\n control the substrate stage to undergo movement relative to the reference system in a first phase and to undergo other movement relative to the reference system during a second phase; and \n control the outlet system to provide a speed of the barrier gas relative to the outlet system when exiting the outlet system and/or a volume of the barrier gas exiting the outlet system per unit of time, that is different in at least part of the first phase compared to in the second phase.

Metadata:
- Claim Count in Document: 46.0
- Percentile: 97.0
- Lexical Diversity: 2.49206
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15520193', '15116794', '15894223', '15387461', '12358000']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6599166204010697
- 35 USC 102 Novelty (BERT): 0.530506318058553
- Combined Prediction Score: 0.646975590166818
- Mean Citation Score: 242.790604
- Max Citation Score: 380.22104
- Similarity Product: 350.6929515304376

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