UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 orOR 15(d) of ~~The Securities Exchange Act of 1934~~

~~Date~~The ofSecurities ~~Report~~Exchange ~~(Date~~Act of ~~earliest~~1934 ~~event reported): February 14, 2005~~

~~KOPPERS~~Date ~~INC.~~of Report (Date of earliest event reported)

April 26, 2005

Koppers Inc.

(Exact name of registrant as specified in its charter)

Pennsylvania		1-12716		25-1588399
(State or other jurisdiction of incorporation)		(Commission File Number)		(~~I.R.S.~~IRS Employer Identification No.)

436 Seventh Avenue


436 Seventh Avenue Pittsburgh, Pennsylvania		15219
(Address of principal executive offices)		(Zip Code)

~~Pittsburgh~~Registrant’s telephone number, ~~Pennsylvania~~including ~~15219~~area code 412-227-2001

(~~Address~~Former ofname ~~principal~~or ~~executive~~former ~~offices~~address, if changed since last report.)

~~Registrant’s~~Check ~~telephone~~the appropriate ~~number,~~box ~~including~~below ~~area~~if ~~code:~~the ~~(412)~~Form ~~227~~8-~~2001~~K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 78.01 ~~Regulation~~Other ~~FD Disclosure~~Events.

In aApril ~~registration~~2005, ~~statement~~the onNew ~~Form~~Zealand ~~S-4~~Commerce Commission (the “NZCC”) filed ~~with~~a Statement of Claim in the ~~Securities~~High Court of New Zealand against a number of corporate and ~~Exchange~~individual ~~Commission~~defendants, ~~today~~including byKoppers ~~our~~Arch ~~parent~~Wood Protection (NZ) Limited (“KANZ”), Koppers Arch Investments Pty Limited (“Koppers Arch Investments”), Koppers Australia Pty Limited, TPL Limited, Nufarm Limited, ~~company~~Nufarm Australia Limited, KIOsmose ~~Holdings~~New ~~Inc~~Zealand Limited, Osmose Australia Pty Limited and a number of current and former employees of such companies. This followed an investigation by the NZCC into the competitive practices of the wood preservative industry in New Zealand. The Statement of Claim contains a number of separate causes of action relating to alleged violations of the New Zealand Commerce Act of 1986 (the “Act”). The NZCC seeks, among other things, (i) pecuniary penalties for each cause of action in an unspecified amount pursuant to ~~exchange~~the ~~its~~Act, ~~outstanding~~(ii) 9injunctions ~~7/8%~~restraining ~~Senior~~defendants ~~Discount~~from ~~Notes~~further ~~Due~~anticompetitive ~~2014~~conduct, (iii) orders barring the named individual defendants from certain future corporate positions and (iv) reimbursement of legal costs. The Act provides that the NZCC may seek pecuniary penalties against each corporate defendant for ~~substantially~~each ~~identical~~cause ~~registered~~of ~~notes~~action not to exceed the higher of (i) $NZ10,000,000, KI(ii) ~~Holdings~~three ~~Inc~~times the commercial gain from the contravention or (iii) 10% of the turnover of the corporate defendant and all interconnected companies. ~~made~~KANZ is seeking to cooperate with the ~~following~~NZCC. ~~risk~~Although ~~factor~~it ~~disclosure:~~is likely that penalties will be ordered by the High Court as a result of the proceedings, we do not currently have enough information to determine the amount of any such penalties. Such penalties, if ordered, could have a material adverse effect on the business, financial condition, cash flows and results of operations of those companies. Except as set forth above, we are not currently aware of any other claims (civil or governmental) related to competitive practices in New Zealand. Such other claims, if filed and resolved unfavorably, could have a material adverse effect on the business, financial condition, cash flows and results of operations of KANZ and its interconnected companies.

Koppers Arch Wood Protection (NZ) Ltd (“Koppers Arch New Zealand”) is the subject of an ongoing investigation by the New Zealand Commerce Commission (“NZ Commerce Commission”) regarding industry competitive practices. Koppers Arch New Zealand manufactures and markets wood preservative products throughout New Zealand. Koppers Arch New Zealand is cooperating with the NZ Commerce Commission’s investigation. The NZ Commerce Commission has the authority to penalize companies that have violated New Zealand’s competition laws. Such penalties, if assessed against Koppers Arch New Zealand, could have a material adverse effect on its business, financial condition, cash flows and results of operations. For example, the NZ Commerce Commission has the authority to assess fines equal to the higher of (i) $NZ10,000,000, (ii) three times the commercial gain from the contravention or (iii) 10% of the turnover of Koppers Arch New Zealand and all interconnected companies. Similarly, Koppers Arch Wood Protection (Aust) Pty ~~Ltd~~Limited (“Koppers Arch Australia”), ~~an affiliate of Koppers Arch New Zealand,~~ has also made an application for leniency under the Australian Competition and Consumer Commission’s (the “ACCC”) policy for cartel conduct. The ACCC has ~~confirmed~~granted ~~that~~immunity to Koppers Arch Australia, ~~satisfies~~subject to the ~~requirements~~fulfillment of ~~its~~certain ~~leniency program and the~~ conditions, ~~attaching~~such toas, ~~Koppers~~but ~~Arch~~not ~~Australia’s~~limited ~~leniency application are expected~~ to, ~~be determined shortly~~continued cooperation. InIf the ~~event~~conditions ~~such~~are ~~leniency application is~~ not ~~granted~~fulfilled, ~~the ACCC may penalize~~ Koppers Arch Australia may be penalized for any ~~violations~~violation of the competition laws of Australia. Such penalties, if assessed against Koppers Arch Australia, could have a material adverse effect on its business, financial condition, cash flows and results of operations. Koppers Arch New Zealand and Koppers Arch Australia are wholly-owned subsidiaries of Koppers Arch Investments Pty Ltd, which is an Australian joint venture owned 51% by Worldwide Ventures Corporation and 49% by Hickson Nederland BV.

~~SIGNATURE~~KANZ and Koppers Arch Australia are majority-owned subsidiaries of Koppers Arch Investments, which is an Australian joint venture owned 51% by World-Wide Ventures Corporation (a subsidiary of ours) and 49% by Hickson Nederland BV. KANZ and Koppers Arch Australia manufacture and market wood preservative products throughout New Zealand and Australia, respectively.

~~Pursuant~~SIGNATURES ~~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, hereunto duly authorized.~~

	KOPPERS INC.
Dated: February 14, 2005
	By:	/s/ Steven R. Lacy
		Steven R. Lacy Senior Vice President, Administration, General Counsel and Secretary

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 hereunto duly authorized.

~~-2-~~Dated: April 27, 2005


Koppers Inc.

By:		/s/ Steven R. Lacy
		Steven R. Lacy
		Senior Vice President, Administration,
		General Counsel and Secretary

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