SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of March, 2014

Commission File Number 1-14668

COMPANHIA PARANAENSE DE ENERGIA

(Exact name of registrant as specified in its charter)

Energy Company of Paraná

(Translation of Registrant's name into English)

Rua Coronel Dulcídio, 800
80420-170 Curitiba, Paraná
Federative Republic of Brazil
(5541) 3222-2027

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.  Form 20-F ___X___ Form 40-F _______

 Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

Yes _______ No ___X____

 

COMPANHIA PARANAENSE DE ENERGIA - COPEL

Corporate Taxpayers’ ID (CNPJ) 76.483.817/0001-20

PUBLICLY-HELD COMPANY

CVM 1431-1

SEC (CUSIP) 20441B407 – Preferred “B” Shares

SEC (CUSIP) 20441B308 – Common Shares

LATIBEX 29922 – Preferred “B” Shares

NOTICE TO THE MARKET

Companhia Paranaense de Energia – COPEL, a company that generates, transmits, distributes and sells power, with shares listed on the BM&FBOVESPA (CPLE3, CPLE5, CPLE6), NYSE (ELP) and LATIBEX (XCOP), in compliance with Article 12 of CVM Instruction 358/02, hereby announces to its shareholders and the market in general that it has been informed by BlackRock, Inc., on behalf of some of its clients and in its capacity as an investment manager, that they had reduced their joint interest to 6,442,438 class B preferred shares (PNB) and now hold approximately 4.99% of all COPEL's PNB shares, as per the correspondence below.

Curitiba, March 20, 2014

Antonio Sergio de Souza Guetter

Chief Financial and Investor Relations Officer

CIA PARANAENSE DE ENERGIA – COPEL

Rua Coronel Dulcídio, 800 – 3º andar

80420-170 – Curitiba, PR - Brazil

Att.:Mr. Luis Eduardo da Vega Sebastian

Investor Relations Officer

Phone: 55 41 3331-4311

Fax.: 55 41 3331-3136

e-mail:sebastiani@copel.com 

February 27, 2014

Companhia Paranaense de Energia – Announcement of Sale of Relevant Interest

Dear Sirs,

1The undersigned BlackRock, Inc. (“BlackRock”), hereby informs you, on behalf of some of its clients and in its capacity as an investment manager, that it has sold class B preferred shares issued by Companhia Paranaense de Energia (“COPEL”), as a result of which their combined interest on February 25, 2014 totaled  5,741,075  preferred shares and 681,363 American Depositary Receipts representing class B preferred shares (“ADRs”), totaling approximately 4.99% of the preferred shares issued by COPEL.

 

2In compliance with Article 2 of Instruction 358 issued by the Brazilian Securities and Exchange Commission (“CVM”) on January 3, 2002, as amended, BlackRock hereby requests COPEL’s Investor Relations Officer to disclose the following information to the CVM and other competent bodies:

(i)BlackRock is headquartered at 40 East 52^nd Street, New York, New York 10022-5911, United States of America;

(ii)The combined interest held by BlackRock totals 5,741,075 class B preferred shares and 681,363 ADRs representing class B preferred shares, as detailed in item 1 above;

(iii)The above-mentioned shareholding interest is strictly for investment purposes and there is no intention of altering COPEL’s shareholding control or management structure;

(iv)BlackRock does not hold convertible debentures issued by COPEL; and

(v)BlackRock has not entered into any contracts or agreements regulating the exercise of voting rights or the purchase and sale of securities issued by COPEL.

3We remain at your disposal for any further information you may require.

Sincerely,

BlackRock, Inc.

By proxy Renata Cardoso

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: March 21, 2014

COMPANHIA PARANAENSE DE ENERGIA – COPEL
By:	/S/  Lindolfo Zimmer
	Lindolfo Zimmer CEO

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.