CN112734507A - House lease distribution method, distribution system and storage medium based on block chain - Google Patents
House lease distribution method, distribution system and storage medium based on block chain Download PDFInfo
- Publication number
- CN112734507A CN112734507A CN201910975107.0A CN201910975107A CN112734507A CN 112734507 A CN112734507 A CN 112734507A CN 201910975107 A CN201910975107 A CN 201910975107A CN 112734507 A CN112734507 A CN 112734507A
- Authority
- CN
- China
- Prior art keywords
- house
- intelligent
- tenant
- house source
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012216 screening Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000012790 confirmation Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/06—Buying, selling or leasing transactions
- G06Q30/0645—Rental transactions; Leasing transactions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/06—Buying, selling or leasing transactions
- G06Q30/0601—Electronic shopping [e-shopping]
- G06Q30/0613—Third-party assisted
- G06Q30/0619—Neutral agent
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/16—Real estate
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Economics (AREA)
- Marketing (AREA)
- General Physics & Mathematics (AREA)
- Strategic Management (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Tourism & Hospitality (AREA)
- Development Economics (AREA)
- Primary Health Care (AREA)
- Human Resources & Organizations (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention provides a house leasing distribution method, a distribution system and a storage medium based on a block chain. The main working flow of the invention is as follows: the tenant initiates a lease finding instruction to the intelligent intermediary node; matching by the intelligent intermediate node; the tenant receives and screens the house source information; when the tenants are not satisfied, the intelligent intermediate node sends prompt information to enable the tenants to reselect or modify the house requirement conditions, and the steps are repeated; when the tenants are satisfied, the intelligent intermediary node sends the tenant requests to a plurality of landlors, and the landlors update the house source lease rates and return the house source lease rates to the tenants through the intelligent intermediary node; the tenant determines lease, the intelligent intermediate node links the completed transactions to the block chain, and encrypts and digitally signs the transactions; after the chain is linked, the tenant node and the landlord node are confirmed again, and other intelligent intermediary nodes are confirmed.
Description
Technical Field
The invention relates to a house leasing distribution method, a distribution system and a storage medium based on a block chain, and belongs to the technical field of block chains.
Background
At present, the house leasing market at home and abroad is huge, particularly in the first-line cities of wide and deep north, people can not purchase houses for a moment due to frequent flowing, and the demand for house leasing is very urgent.
At present, a house leasing platform in the existing market at home and abroad mainly has two modes, 1, an internet platform for a user to individually release house leasing information, including 58 same cities, salted fish and the like, and a landlord releases house source information on the platform; 2. the most representative of the Internet intermediary companies which independently provide house resources is a free platform, and a tenant can watch and rent house by contacting the house-renting intermediary companies.
However, in the two house renting modes, for the first mode, in order to save time and energy, the landlord mostly hands the house source to the intermediary and entrusts the intermediary to rent the house, so that most house source information on the platform is issued by the intermediary, and a tenant is difficult to determine whether the house source issued by the intermediary is a real house source. In addition, part of intermediaries attract tenants to see rooms by releasing low-price house resources, and the tenants are taken to see other house resources by renting the low-price house resources, and meanwhile, the house resource price is increased, so that the rights and interests of the tenants cannot be guaranteed; in the second mode, the development of the internet agency company which provides house resources autonomously is limited due to the problems of small quantity of house resources, potential safety hazards in house decoration, and the like. In addition, the two internet house leasing modes have the common problem that the information authenticity and privacy safety of users of two leasing parties cannot be guaranteed.
The block chain technology is a chain data structure based on a timestamp, can ensure that the block chain technology cannot be tampered and forged in a cryptographic mode, and is decentralized and distrusted distributed shared general ledger technology. All nodes participate in data backup and maintenance together, and data stored in the block chain cannot be affected by tampering or damage of one node, so that the data can be safely stored. Distributed node verification and communication are realized through a P2P network technology and a consensus mechanism, a trust relationship is established, a complex business logic function is realized through an intelligent contract, and the transaction is automatically operated.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a house renting allocation method, an allocation system, and a storage medium based on a block chain, which are used to solve the problems in the prior art that, in order to save time and energy, a house owner mostly sends a house source to an intermediary, and entrusts the intermediary to rent a house, so that most of the house source information on a platform is issued by the intermediary, and it is difficult for a tenant to determine whether the house source issued by the intermediary is a real house source, and in addition, some intermediaries attract the tenant to see the house by issuing a low-price house source, and then the low-price house source is rented as a result, the tenant is brought to see other house sources, and the house source price is increased, and the tenant rights and interests are.
The invention provides a house leasing allocation method based on a block chain, which comprises the following steps:
the tenant initiates a lease finding instruction to the intelligent intermediary node;
the intelligent intermediate nodes are matched according to conditions;
the tenant receives and screens the house source information sent by the intelligent intermediate node;
when the reserved house source information after the tenant screening is less than 1, the intelligent intermediate node sends prompt information to enable the tenant to reselect or modify the house requirement conditions, and the steps are repeated;
when the reserved house source information after the tenant screening is larger than 1, the intelligent intermediary node sends tenant requests to a plurality of landlors, and the landlors update house source lease prices and return the house source lease prices to the tenants through the intelligent intermediary node;
the tenant determines lease, the intelligent intermediate node links the completed transactions to the block chain, and encrypts and digitally signs the transactions;
after the uplink is finished, the tenant node and the landlord node are confirmed again, and other intelligent intermediary nodes conduct confirmation.
And the house source database stores house source information of the landlord.
The specific steps of the intelligent intermediate node matching according to the conditions are as follows: after receiving the tenant renting instruction, the intelligent intermediate node updates the house source database and starts to match the house requirement conditions of the tenant.
The specific steps of updating the house source rent price by the landlord are as follows: and the landlord updates the house source rent price according to the provided house source price interval.
If the situation that a plurality of tenants select the same house source occurs, the intelligent intermediary node sends the information request of each tenant to the landlord, the landlord formulates the house source starting price, and the house source starting price is fed back to the tenants through the intelligent intermediary node, at the moment, the plurality of tenants can strive for the achievement of the transaction according to the auction mode, and the highest price of the auction cannot exceed the highest price in the house source price interval.
A house lease distribution system based on block chains comprises:
the intelligent intermediary node: the intelligent intermediate node provides communication service for the user, assists landlords and tenants to agree on house source prices, records transaction information and stores transaction records to the block chain;
a transaction data module: storing, sharing and auditing all original data of the house renting affairs;
the intelligent contract module: the intelligent contract realizes specific services, realizes specific transaction details and criteria in a script mode, and realizes automatic execution of transactions;
a house source database: and storing the house source information of the landlord.
A storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of a block chain based premises lease distribution system as described above.
An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of a system for block chain based premises rental allocation as described above.
As described above, the house leasing allocation method, the house leasing allocation system and the storage medium based on the block chain of the present invention have the following advantages:
the invention ensures the separation of user information and transaction information and the safety, privacy and transparency of data under the non-trust condition, adopts the intelligent intermediary to replace the human intermediary, reduces the labor and time cost of landlords, ensures the rights and interests of tenants, solves the bilateral trust problem of house renting, realizes the self-adaptive renting and matching problem through intelligent contracts, and saves the renting time of tenants.
Drawings
Fig. 1 is a schematic diagram illustrating a work flow of a house leasing allocation method, a house leasing allocation system and a storage medium according to the invention.
Fig. 2 is a schematic diagram of tenant, landlord, and intelligent intermediate nodes of a house lease allocation method, system, and storage medium according to the invention.
Fig. 3 is a schematic diagram of an upper transaction chain of a house lease allocation method, an allocation system and a storage medium according to the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1, the present invention provides a house leasing allocation method based on a block chain, including the following steps:
the tenant initiates a lease finding instruction to the intelligent intermediary node;
the intelligent intermediate nodes are matched according to conditions;
the tenant receives and screens the house source information sent by the intelligent intermediate node;
when the reserved house source information after the tenant screening is less than 1, the intelligent intermediate node sends prompt information to enable the tenant to reselect or modify the house requirement conditions, and the steps are repeated;
when the reserved house source information after the tenant screening is larger than 1, the intelligent intermediary node sends tenant requests to a plurality of landlors, and the landlors update house source lease prices and return the house source lease prices to the tenants through the intelligent intermediary node;
the tenant determines lease, the intelligent intermediate node links the completed transactions to the block chain, and encrypts and digitally signs the transactions;
after the uplink is finished, the tenant node and the landlord node are confirmed again, and other intelligent intermediary nodes conduct confirmation.
As shown in fig. 1, a house leasing allocation method based on a block chain includes the specific steps of:
the method comprises the following steps: the tenant sends a lease searching instruction to the intelligent intermediary node and inputs the requirement conditions for the house;
step two: after receiving a tenant renting instruction, the intelligent intermediate node updates the house source database and starts to match the house requirement conditions of the tenant;
step three: the intelligent intermediate node sends the screened house source information to the tenant, and the tenant performs screening information confirmation operation and returns the result to the intelligent intermediate node;
step four: if the reserved house source information after the tenant screening is smaller than 1, the intelligent intermediate node sends prompt information to enable the tenant to reselect or modify the house requirement conditions, and the first step is returned;
step five: if the reserved house source information after the tenant screening is larger than 1, the intelligent intermediate node sends the tenant request to a plurality of landlors, the landlors set and update house source renting prices according to the provided house source price interval, and information is returned to the tenant through the intelligent intermediate node;
step six: the tenants determine renting according to renting prices provided by a plurality of landlords and the requirements of the tenants;
step seven: if the situation that a plurality of tenants select the same house source occurs, the intelligent intermediary node sends the information request of each tenant to the landlord, the landlord sets the house source starting price and feeds back the house source starting price to the tenant through the intelligent intermediary node, at the moment, the plurality of tenants can strive for the achievement of the transaction according to the auction mode, and the highest price of the auction cannot exceed the highest price of the house source price interval, so that the occurrence of the phenomenon of market disturbance is avoided;
step eight: the intelligent intermediate node links the completed transactions to a blockchain, and encrypts and digitally signs the transactions;
step nine: after the uplink is finished, besides reconfirmation of the tenant node and the landlord node, other intelligent intermediate nodes are required to perform reconfirmation, and when the consensus is achieved, the transaction is finished.
As shown in fig. 2, the specific communication steps between the tenant and the landlord and the intelligent intermediate node are as follows:
the tenant sends a lease searching instruction to the intelligent intermediary node and inputs the requirement conditions for the house;
after receiving a tenant renting instruction, the intelligent intermediate node updates the house source database and starts to match the house requirement conditions of the tenant;
and the intelligent intermediate node sends the screened house source information to the tenant, and the tenant performs screening information confirmation operation and returns the result to the intelligent intermediate node.
Referring to fig. 3, the present invention provides a house leasing allocation system based on a block chain, including:
the intelligent intermediary node: the intelligent intermediate node provides communication service for the user, assists landlords and tenants to agree on house source prices, records transaction information and stores transaction records to the block chain;
a transaction data module: storing, sharing and auditing all original data of the house renting affairs;
the intelligent contract module: the intelligent contract realizes specific services, realizes specific transaction details and criteria in a script mode, and realizes automatic execution of transactions;
a house source database: and storing the house source information of the landlord.
In conclusion, the invention ensures the separation of user information and transaction information and the safety, privacy and transparency of data under the non-trust condition, adopts the intelligent intermediary to replace the human intermediary, reduces the labor and time cost of landlords, ensures the rights and interests of tenants, solves the bilateral trust problem of house renting, realizes the self-adaptive renting and matching problem through intelligent contracts and saves the renting time of tenants. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A house leasing distribution method based on a block chain is characterized by comprising the following steps:
the tenant initiates a lease finding instruction to the intelligent intermediary node;
the intelligent intermediate nodes are matched according to conditions;
the tenant receives and screens the house source information sent by the intelligent intermediate node;
when the reserved house source information after the tenant screening is less than 1, the intelligent intermediate node sends prompt information to enable the tenant to reselect or modify the house requirement conditions, and the steps are repeated;
when the reserved house source information after the tenant screening is larger than 1, the intelligent intermediary node sends tenant requests to a plurality of landlors, and the landlors update house source lease prices and return the house source lease prices to the tenants through the intelligent intermediary node;
the tenant determines lease, the intelligent intermediate node links the completed transactions to the block chain, and encrypts and digitally signs the transactions;
after the uplink is finished, the tenant node and the landlord node are confirmed again, and other intelligent intermediary nodes conduct confirmation.
2. The method of claim 1 for allocating house rentals based on block chains, wherein the method comprises the following steps: the specific steps of the intelligent intermediate node matching according to the conditions are as follows: after receiving the tenant renting instruction, the intelligent intermediate node updates the house source database and starts to match the house requirement conditions of the tenant.
3. The method of claim 2 for allocating house rentals based on the block chain, wherein the method comprises the following steps: and the house source database stores house source information of the landlord.
4. The method of claim 3 for allocating house rentals based on the block chains, wherein the method comprises the following steps: the specific steps of updating the house source rent price by the landlord are as follows: and the landlord updates the house source rent price according to the provided house source price interval.
5. The method of claim 4 for allocating house rentals based on the block chain, wherein the method comprises the following steps: if the situation that a plurality of tenants select the same house source occurs, the intelligent intermediary node sends the information request of each tenant to the landlord, the landlord formulates the house source starting price, and the house source starting price is fed back to the tenants through the intelligent intermediary node, at the moment, the plurality of tenants can strive for the achievement of the transaction according to the auction mode, and the highest price of the auction cannot exceed the highest price in the house source price interval.
6. A block chain based house lease distribution system, characterized in that the block chain based house lease distribution system comprises:
the intelligent intermediary node: the intelligent intermediate node provides communication service for the user, assists landlords and tenants to agree on house source prices, records transaction information and stores transaction records to the block chain;
a transaction data module: storing, sharing and auditing all original data of the house renting affairs;
the intelligent contract module: the intelligent contract realizes specific services, realizes specific transaction details and criteria in a script mode, and realizes automatic execution of transactions;
a house source database: and storing the house source information of the landlord.
7. A storage medium on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of claims 1-5.
8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein: the processor, when executing the program, implements the steps of the method of claims 1-5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910975107.0A CN112734507A (en) | 2019-10-14 | 2019-10-14 | House lease distribution method, distribution system and storage medium based on block chain |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910975107.0A CN112734507A (en) | 2019-10-14 | 2019-10-14 | House lease distribution method, distribution system and storage medium based on block chain |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112734507A true CN112734507A (en) | 2021-04-30 |
Family
ID=75588625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910975107.0A Pending CN112734507A (en) | 2019-10-14 | 2019-10-14 | House lease distribution method, distribution system and storage medium based on block chain |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112734507A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113542439A (en) * | 2021-09-17 | 2021-10-22 | 深圳时空云科技有限公司 | Distributed data storage access method and device |
CN113674483A (en) * | 2021-08-25 | 2021-11-19 | 安徽高山科技有限公司 | Automobile leasing method based on block chain |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109544302A (en) * | 2018-11-28 | 2019-03-29 | 平安科技(深圳)有限公司 | House renting management method, electronic device based on block chain |
CN109903123A (en) * | 2019-01-18 | 2019-06-18 | 众安信息技术服务有限公司 | A kind of house lease method and system |
-
2019
- 2019-10-14 CN CN201910975107.0A patent/CN112734507A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109544302A (en) * | 2018-11-28 | 2019-03-29 | 平安科技(深圳)有限公司 | House renting management method, electronic device based on block chain |
CN109903123A (en) * | 2019-01-18 | 2019-06-18 | 众安信息技术服务有限公司 | A kind of house lease method and system |
Non-Patent Citations (1)
Title |
---|
李瑞娥等: "基于区块链的房屋租赁分配系统设计与实现", 《软件导刊》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113674483A (en) * | 2021-08-25 | 2021-11-19 | 安徽高山科技有限公司 | Automobile leasing method based on block chain |
CN113542439A (en) * | 2021-09-17 | 2021-10-22 | 深圳时空云科技有限公司 | Distributed data storage access method and device |
CN113542439B (en) * | 2021-09-17 | 2021-12-07 | 深圳时空云科技有限公司 | Distributed data storage access method and device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Xu et al. | Private parking slot sharing | |
EP2510473B1 (en) | Unified user login for co-location facilities | |
CN109636320A (en) | Workflow examination and approval method and terminal device | |
CN108520008A (en) | The construction method and construction device of data warehouse model | |
CN109241772A (en) | Invoice block chained record method, apparatus, block chain gateway server and medium | |
CN107836007A (en) | It was found that and issue API information | |
WO2002079916A2 (en) | Method for incorporating human-based activities in business process models | |
CN101163067A (en) | Building industry cooperation network management system and management method thereof | |
US20210312547A1 (en) | Multi-energy trading and management platform based on blockchain | |
CN112734507A (en) | House lease distribution method, distribution system and storage medium based on block chain | |
US11599687B1 (en) | System and method to facilitate the design, manufacturing and construction of structures | |
Zheng et al. | A property-led approach to cluster development:‘creative industry clusters’ and creative industry networks in Shanghai | |
CN115115451A (en) | Block chain service management system for bulk commodity transaction supervision | |
CN111988173B (en) | Tenant management platform and tenant management method based on multi-layer father-son structure tenant | |
Wang et al. | Emerging geography of technological innovation in C hina's ICT industry: Region, inter‐firm linkages and innovative performance in a transitional economy | |
CN100456721C (en) | Intraconnection network structure and method for establishing intraconnection network | |
Boeva et al. | Platformization in the built environment: The political techno-economy of Building Information Modeling | |
Sin | Segregation and marginalisation within public housing: The disadvantaged in Bedok New Town, Singapore | |
CN104166581B (en) | A kind of virtual method towards increment manufacturing equipment | |
Spring et al. | How is that going to work? Rethinking acquisitions in a next-generation ILS | |
CN103745282A (en) | Authority management method based on post abstraction | |
Kassem et al. | A framework for the integration and coordination of the construction supply chain | |
Yim et al. | The strategy of technology park for the development of IT industry in Pakistan | |
Session | Cost Benefit Analysis | |
Tan | Design of a Rural Idle House Resource Information Management System Based on the Ssh Framework |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
RJ01 | Rejection of invention patent application after publication |