PATENT CLAIM ANALYSIS

Application Number: 16458601
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-10
Patent Classification: ["355", "030000"]

Abstract:
A method of reducing effects of reticle heating and/or cooling in a lithographic process, the method including calibrating a linear time invariant reticle heating model using a system identification method; predicting distortions of the reticle using the reticle heating model and inputs in the lithographic process; and calculating and applying a correction in the lithographic process on the basis of the predicted distortions of the reticle.

Claim (Index 33):
A lithographic apparatus comprising:\n a support constructed to support a reticle, the reticle being capable of imparting a radiation beam with a pattern in its cross-section to form a patterned radiation beam; a projection system configured to project the patterned radiation beam onto a target portion of a substrate; and a control system configured to at least:\n calibrate a linear time invariant reticle heating model, the reticle heating model representing heating and/or cooling of a reticle in a lithographic process; \n predict distortions of the reticle using the reticle heating model and inputs in the lithographic process; and \n calculate and apply a correction in the lithographic process on the basis of the predicted distortions of the reticle, \n wherein the predicted distortion is expressed in one or more focus parameters.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 100.0
- Lexical Diversity: 1.94444
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15760629', '15405009', '12860229', '13306728', '12727054']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7063104851932354
- 35 USC 102 Novelty (BERT): 0.5235959380515502
- Combined Prediction Score: 0.6880390304790668
- Mean Citation Score: 272.04932599999995
- Max Citation Score: 372.92465
- Similarity Product: 346.500821406588

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