PATENT CLAIM ANALYSIS

Application Number: 15935670
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["355", "030000"]

Abstract:
An apparatus and method for cleaning a contaminated surface of a lithographic apparatus are provided. A liquid confinement structure comprises at least two openings used to supply and extract liquid to a gap below the structure. The direction of flow between the openings can be switched. Liquid may be supplied to the gap radially outward of an opening adapted for dual flow. Supply and extraction lines to respectively supply liquid to and extract liquid from the liquid confinement structure have an inner surface that is resistant to corrosion by an organic liquid. A corrosive cleaning fluid can be used to clean photo resist contamination.

Claim (Index 2):
The lithographic apparatus of  claim 1 , wherein the controller is further configured to control the direction of liquid flow through the at least two openings during an exposure operation such that the at least two openings extract liquid from the gap.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 90.0
- Lexical Diversity: 1.69231
- Patent Class: 355.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['12956934', '14310873', '15589674', '15018582', '13103479']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7630330976749573
- 35 USC 102 Novelty (BERT): 0.525843032441893
- Combined Prediction Score: 0.7393140911516509
- Mean Citation Score: 340.9286140000001
- Max Citation Score: 374.27216
- Similarity Product: 344.33358354169843

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